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Finding the Fourth Proportional to 150,031.92, 207,065.79 and 86,369.16

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Solution

The fourth proportional to 150,031.92, 207,065.79 and 86,369.16 is: 119,201.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,031.92 : 207,065.79 = 86,369.16 : x
  2. Step 2: Convert to fraction form
    150,031.92/207,065.79 = 86,369.16/x
  3. Step 3: Cross multiply
    150,031.92x = 207,065.79 × 86,369.16
  4. Step 4: Simplify right side
    150,031.92x = 17,884,098,347.04
  5. Step 5: Solve for x
    x = 17,884,098,347.04/150,031.92
  6. Step 6: Final answer
    x = 119,201.96

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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.