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Finding the Fourth Proportional to 113,779.80, 156,948.47 and 73,517.30

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Solution

The fourth proportional to 113,779.80, 156,948.47 and 73,517.30 is: 101,410.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,779.80 : 156,948.47 = 73,517.30 : x
  2. Step 2: Convert to fraction form
    113,779.80/156,948.47 = 73,517.30/x
  3. Step 3: Cross multiply
    113,779.80x = 156,948.47 × 73,517.30
  4. Step 4: Simplify right side
    113,779.80x = 11,538,427,753.53
  5. Step 5: Solve for x
    x = 11,538,427,753.53/113,779.80
  6. Step 6: Final answer
    x = 101,410.16

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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.