Home / 136,721.40-205,082.10-131,472.60

Finding the Fourth Proportional to 136,721.40, 205,082.10 and 131,472.60

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Solution

The fourth proportional to 136,721.40, 205,082.10 and 131,472.60 is: 197,208.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,721.40 : 205,082.10 = 131,472.60 : x
  2. Step 2: Convert to fraction form
    136,721.40/205,082.10 = 131,472.60/x
  3. Step 3: Cross multiply
    136,721.40x = 205,082.10 × 131,472.60
  4. Step 4: Simplify right side
    136,721.40x = 26,962,676,900.46
  5. Step 5: Solve for x
    x = 26,962,676,900.46/136,721.40
  6. Step 6: Final answer
    x = 197,208.90

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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.