Home / 156,116.20-215,294.13-103,635.36

Finding the Fourth Proportional to 156,116.20, 215,294.13 and 103,635.36

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Solution

The fourth proportional to 156,116.20, 215,294.13 and 103,635.36 is: 142,919.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,116.20 : 215,294.13 = 103,635.36 : x
  2. Step 2: Convert to fraction form
    156,116.20/215,294.13 = 103,635.36/x
  3. Step 3: Cross multiply
    156,116.20x = 215,294.13 × 103,635.36
  4. Step 4: Simplify right side
    156,116.20x = 22,312,084,668.44
  5. Step 5: Solve for x
    x = 22,312,084,668.44/156,116.20
  6. Step 6: Final answer
    x = 142,919.73

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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.