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Finding the Fourth Proportional to 161,153.28, 241,729.92 and 55,915.20

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Solution

The fourth proportional to 161,153.28, 241,729.92 and 55,915.20 is: 83,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,153.28 : 241,729.92 = 55,915.20 : x
  2. Step 2: Convert to fraction form
    161,153.28/241,729.92 = 55,915.20/x
  3. Step 3: Cross multiply
    161,153.28x = 241,729.92 × 55,915.20
  4. Step 4: Simplify right side
    161,153.28x = 13,516,376,822.78
  5. Step 5: Solve for x
    x = 13,516,376,822.78/161,153.28
  6. Step 6: Final answer
    x = 83,872.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.