Home / 131,337.90-197,152.65-81,474.30

Finding the Fourth Proportional to 131,337.90, 197,152.65 and 81,474.30

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Solution

The fourth proportional to 131,337.90, 197,152.65 and 81,474.30 is: 122,301.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,337.90 : 197,152.65 = 81,474.30 : x
  2. Step 2: Convert to fraction form
    131,337.90/197,152.65 = 81,474.30/x
  3. Step 3: Cross multiply
    131,337.90x = 197,152.65 × 81,474.30
  4. Step 4: Simplify right side
    131,337.90x = 16,062,874,151.90
  5. Step 5: Solve for x
    x = 16,062,874,151.90/131,337.90
  6. Step 6: Final answer
    x = 122,301.90

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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.