Home / 155,368,813,918.78-214,406,681,390.52-86,781,227,979.76

Finding the Fourth Proportional to 155,368,813,918.78, 214,406,681,390.52 and 86,781,227,979.76

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Solution

The fourth proportional to 155,368,813,918.78, 214,406,681,390.52 and 86,781,227,979.76 is: 119,756,820,103.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,368,813,918.78 : 214,406,681,390.52 = 86,781,227,979.76 : x
  2. Step 2: Convert to fraction form
    155,368,813,918.78/214,406,681,390.52 = 86,781,227,979.76/x
  3. Step 3: Cross multiply
    155,368,813,918.78x = 214,406,681,390.52 × 86,781,227,979.76
  4. Step 4: Simplify right side
    155,368,813,918.78x = 18,606,475,098,134,480,420,864
  5. Step 5: Solve for x
    x = 18,606,475,098,134,480,420,864/155,368,813,918.78
  6. Step 6: Final answer
    x = 119,756,820,103.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.