Home / 156,116.57-215,294.65-103,635.73

Finding the Fourth Proportional to 156,116.57, 215,294.65 and 103,635.73

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Solution

The fourth proportional to 156,116.57, 215,294.65 and 103,635.73 is: 142,920.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,116.57 : 215,294.65 = 103,635.73 : x
  2. Step 2: Convert to fraction form
    156,116.57/215,294.65 = 103,635.73/x
  3. Step 3: Cross multiply
    156,116.57x = 215,294.65 × 103,635.73
  4. Step 4: Simplify right side
    156,116.57x = 22,312,218,217.84
  5. Step 5: Solve for x
    x = 22,312,218,217.84/156,116.57
  6. Step 6: Final answer
    x = 142,920.24

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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.