Home / 123,524.24-170,400.85-78,125.76

Finding the Fourth Proportional to 123,524.24, 170,400.85 and 78,125.76

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Solution

The fourth proportional to 123,524.24, 170,400.85 and 78,125.76 is: 107,773.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,524.24 : 170,400.85 = 78,125.76 : x
  2. Step 2: Convert to fraction form
    123,524.24/170,400.85 = 78,125.76/x
  3. Step 3: Cross multiply
    123,524.24x = 170,400.85 × 78,125.76
  4. Step 4: Simplify right side
    123,524.24x = 13,312,695,715.58
  5. Step 5: Solve for x
    x = 13,312,695,715.58/123,524.24
  6. Step 6: Final answer
    x = 107,773.96

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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.