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Finding the Fourth Proportional to 131,446.70, 197,238.90 and 60,390.80

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Solution

The fourth proportional to 131,446.70, 197,238.90 and 60,390.80 is: 90,617.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,446.70 : 197,238.90 = 60,390.80 : x
  2. Step 2: Convert to fraction form
    131,446.70/197,238.90 = 60,390.80/x
  3. Step 3: Cross multiply
    131,446.70x = 197,238.90 × 60,390.80
  4. Step 4: Simplify right side
    131,446.70x = 11,911,414,962.12
  5. Step 5: Solve for x
    x = 11,911,414,962.12/131,446.70
  6. Step 6: Final answer
    x = 90,617.83

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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.