Home / 91,288.20-136,932.30-72,625.80

Finding the Fourth Proportional to 91,288.20, 136,932.30 and 72,625.80

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Solution

The fourth proportional to 91,288.20, 136,932.30 and 72,625.80 is: 108,938.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,288.20 : 136,932.30 = 72,625.80 : x
  2. Step 2: Convert to fraction form
    91,288.20/136,932.30 = 72,625.80/x
  3. Step 3: Cross multiply
    91,288.20x = 136,932.30 × 72,625.80
  4. Step 4: Simplify right side
    91,288.20x = 9,944,817,833.34
  5. Step 5: Solve for x
    x = 9,944,817,833.34/91,288.20
  6. Step 6: Final answer
    x = 108,938.70

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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.