Home / 261,965.80-392,988.38-133,811.72

Finding the Fourth Proportional to 261,965.80, 392,988.38 and 133,811.72

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Solution

The fourth proportional to 261,965.80, 392,988.38 and 133,811.72 is: 200,737.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,965.80 : 392,988.38 = 133,811.72 : x
  2. Step 2: Convert to fraction form
    261,965.80/392,988.38 = 133,811.72/x
  3. Step 3: Cross multiply
    261,965.80x = 392,988.38 × 133,811.72
  4. Step 4: Simplify right side
    261,965.80x = 52,586,451,067.81
  5. Step 5: Solve for x
    x = 52,586,451,067.81/261,965.80
  6. Step 6: Final answer
    x = 200,737.85

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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.