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Finding the Fourth Proportional to 125,499.69, 187,778.99 and 74,712.95

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Solution

The fourth proportional to 125,499.69, 187,778.99 and 74,712.95 is: 111,789.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,499.69 : 187,778.99 = 74,712.95 : x
  2. Step 2: Convert to fraction form
    125,499.69/187,778.99 = 74,712.95/x
  3. Step 3: Cross multiply
    125,499.69x = 187,778.99 × 74,712.95
  4. Step 4: Simplify right side
    125,499.69x = 14,029,522,242.98
  5. Step 5: Solve for x
    x = 14,029,522,242.98/125,499.69
  6. Step 6: Final answer
    x = 111,789.30

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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.