Home / 142,363.72-196,446.90-78,691.24

Finding the Fourth Proportional to 142,363.72, 196,446.90 and 78,691.24

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Solution

The fourth proportional to 142,363.72, 196,446.90 and 78,691.24 is: 108,585.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,363.72 : 196,446.90 = 78,691.24 : x
  2. Step 2: Convert to fraction form
    142,363.72/196,446.90 = 78,691.24/x
  3. Step 3: Cross multiply
    142,363.72x = 196,446.90 × 78,691.24
  4. Step 4: Simplify right side
    142,363.72x = 15,458,650,155.16
  5. Step 5: Solve for x
    x = 15,458,650,155.16/142,363.72
  6. Step 6: Final answer
    x = 108,585.60

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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.