Home / 133,250.31-199,818.57-77,129.16

Finding the Fourth Proportional to 133,250.31, 199,818.57 and 77,129.16

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Solution

The fourth proportional to 133,250.31, 199,818.57 and 77,129.16 is: 115,660.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,250.31 : 199,818.57 = 77,129.16 : x
  2. Step 2: Convert to fraction form
    133,250.31/199,818.57 = 77,129.16/x
  3. Step 3: Cross multiply
    133,250.31x = 199,818.57 × 77,129.16
  4. Step 4: Simplify right side
    133,250.31x = 15,411,838,456.50
  5. Step 5: Solve for x
    x = 15,411,838,456.50/133,250.31
  6. Step 6: Final answer
    x = 115,660.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.