Home / 99,502.43-137,079.81-69,235.70

Finding the Fourth Proportional to 99,502.43, 137,079.81 and 69,235.70

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Solution

The fourth proportional to 99,502.43, 137,079.81 and 69,235.70 is: 95,382.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,502.43 : 137,079.81 = 69,235.70 : x
  2. Step 2: Convert to fraction form
    99,502.43/137,079.81 = 69,235.70/x
  3. Step 3: Cross multiply
    99,502.43x = 137,079.81 × 69,235.70
  4. Step 4: Simplify right side
    99,502.43x = 9,490,815,915.82
  5. Step 5: Solve for x
    x = 9,490,815,915.82/99,502.43
  6. Step 6: Final answer
    x = 95,382.76

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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.