Home / 155,971,260.52-215,247,066-86,356,642.36

Finding the Fourth Proportional to 155,971,260.52, 215,247,066 and 86,356,642.36

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Solution

The fourth proportional to 155,971,260.52, 215,247,066 and 86,356,642.36 is: 119,175,890.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,971,260.52 : 215,247,066 = 86,356,642.36 : x
  2. Step 2: Convert to fraction form
    155,971,260.52/215,247,066 = 86,356,642.36/x
  3. Step 3: Cross multiply
    155,971,260.52x = 215,247,066 × 86,356,642.36
  4. Step 4: Simplify right side
    155,971,260.52x = 18,588,013,897,601,316
  5. Step 5: Solve for x
    x = 18,588,013,897,601,316/155,971,260.52
  6. Step 6: Final answer
    x = 119,175,890.71

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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.