Home / 113,428.62-169,921.53-83,387.43

Finding the Fourth Proportional to 113,428.62, 169,921.53 and 83,387.43

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Solution

The fourth proportional to 113,428.62, 169,921.53 and 83,387.43 is: 124,918.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,428.62 : 169,921.53 = 83,387.43 : x
  2. Step 2: Convert to fraction form
    113,428.62/169,921.53 = 83,387.43/x
  3. Step 3: Cross multiply
    113,428.62x = 169,921.53 × 83,387.43
  4. Step 4: Simplify right side
    113,428.62x = 14,169,319,688.37
  5. Step 5: Solve for x
    x = 14,169,319,688.37/113,428.62
  6. Step 6: Final answer
    x = 124,918.38

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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.