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Finding the Fourth Proportional to 104,702.32, 156,900.39 and 65,139.22

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Solution

The fourth proportional to 104,702.32, 156,900.39 and 65,139.22 is: 97,613.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,702.32 : 156,900.39 = 65,139.22 : x
  2. Step 2: Convert to fraction form
    104,702.32/156,900.39 = 65,139.22/x
  3. Step 3: Cross multiply
    104,702.32x = 156,900.39 × 65,139.22
  4. Step 4: Simplify right side
    104,702.32x = 10,220,369,022.30
  5. Step 5: Solve for x
    x = 10,220,369,022.30/104,702.32
  6. Step 6: Final answer
    x = 97,613.59

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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.