Home / 155,918.84-215,266.38-108,155.48

Finding the Fourth Proportional to 155,918.84, 215,266.38 and 108,155.48

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Solution

The fourth proportional to 155,918.84, 215,266.38 and 108,155.48 is: 149,322.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,918.84 : 215,266.38 = 108,155.48 : x
  2. Step 2: Convert to fraction form
    155,918.84/215,266.38 = 108,155.48/x
  3. Step 3: Cross multiply
    155,918.84x = 215,266.38 × 108,155.48
  4. Step 4: Simplify right side
    155,918.84x = 23,282,238,656.76
  5. Step 5: Solve for x
    x = 23,282,238,656.76/155,918.84
  6. Step 6: Final answer
    x = 149,322.81

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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.