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Finding the Fourth Proportional to 99,398.88, 137,058.48 and 72,493.92

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Solution

The fourth proportional to 99,398.88, 137,058.48 and 72,493.92 is: 99,959.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,398.88 : 137,058.48 = 72,493.92 : x
  2. Step 2: Convert to fraction form
    99,398.88/137,058.48 = 72,493.92/x
  3. Step 3: Cross multiply
    99,398.88x = 137,058.48 × 72,493.92
  4. Step 4: Simplify right side
    99,398.88x = 9,935,906,484.44
  5. Step 5: Solve for x
    x = 9,935,906,484.44/99,398.88
  6. Step 6: Final answer
    x = 99,959.94

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1.5x scale

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.