Home / 131,512.60-197,123.10-72,390.70

Finding the Fourth Proportional to 131,512.60, 197,123.10 and 72,390.70

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Solution

The fourth proportional to 131,512.60, 197,123.10 and 72,390.70 is: 108,505.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,512.60 : 197,123.10 = 72,390.70 : x
  2. Step 2: Convert to fraction form
    131,512.60/197,123.10 = 72,390.70/x
  3. Step 3: Cross multiply
    131,512.60x = 197,123.10 × 72,390.70
  4. Step 4: Simplify right side
    131,512.60x = 14,269,879,195.17
  5. Step 5: Solve for x
    x = 14,269,879,195.17/131,512.60
  6. Step 6: Final answer
    x = 108,505.79

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1.5x scale

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.