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Finding the Fourth Proportional to 157,637.78, 217,540.12 and 101,049.15

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Solution

The fourth proportional to 157,637.78, 217,540.12 and 101,049.15 is: 139,447.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,637.78 : 217,540.12 = 101,049.15 : x
  2. Step 2: Convert to fraction form
    157,637.78/217,540.12 = 101,049.15/x
  3. Step 3: Cross multiply
    157,637.78x = 217,540.12 × 101,049.15
  4. Step 4: Simplify right side
    157,637.78x = 21,982,244,216.90
  5. Step 5: Solve for x
    x = 21,982,244,216.90/157,637.78
  6. Step 6: Final answer
    x = 139,447.82

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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.