Home / 99,308.57-137,044.22-53,987.70

Finding the Fourth Proportional to 99,308.57, 137,044.22 and 53,987.70

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Solution

The fourth proportional to 99,308.57, 137,044.22 and 53,987.70 is: 74,502.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,308.57 : 137,044.22 = 53,987.70 : x
  2. Step 2: Convert to fraction form
    99,308.57/137,044.22 = 53,987.70/x
  3. Step 3: Cross multiply
    99,308.57x = 137,044.22 × 53,987.70
  4. Step 4: Simplify right side
    99,308.57x = 7,398,701,966.16
  5. Step 5: Solve for x
    x = 7,398,701,966.16/99,308.57
  6. Step 6: Final answer
    x = 74,502.15

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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.