Home / 99,705.92-137,516.40-63,899.28

Finding the Fourth Proportional to 99,705.92, 137,516.40 and 63,899.28

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Solution

The fourth proportional to 99,705.92, 137,516.40 and 63,899.28 is: 88,131.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,705.92 : 137,516.40 = 63,899.28 : x
  2. Step 2: Convert to fraction form
    99,705.92/137,516.40 = 63,899.28/x
  3. Step 3: Cross multiply
    99,705.92x = 137,516.40 × 63,899.28
  4. Step 4: Simplify right side
    99,705.92x = 8,787,198,948.19
  5. Step 5: Solve for x
    x = 8,787,198,948.19/99,705.92
  6. Step 6: Final answer
    x = 88,131.17

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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.