Home / 131,321.20-181,177.68-79,654.80

Finding the Fourth Proportional to 131,321.20, 181,177.68 and 79,654.80

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Solution

The fourth proportional to 131,321.20, 181,177.68 and 79,654.80 is: 109,895.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,321.20 : 181,177.68 = 79,654.80 : x
  2. Step 2: Convert to fraction form
    131,321.20/181,177.68 = 79,654.80/x
  3. Step 3: Cross multiply
    131,321.20x = 181,177.68 × 79,654.80
  4. Step 4: Simplify right side
    131,321.20x = 14,431,671,864.86
  5. Step 5: Solve for x
    x = 14,431,671,864.86/131,321.20
  6. Step 6: Final answer
    x = 109,895.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.