Home / 120,891.52-166,778.55-75,490.68

Finding the Fourth Proportional to 120,891.52, 166,778.55 and 75,490.68

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Solution

The fourth proportional to 120,891.52, 166,778.55 and 75,490.68 is: 104,144.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,891.52 : 166,778.55 = 75,490.68 : x
  2. Step 2: Convert to fraction form
    120,891.52/166,778.55 = 75,490.68/x
  3. Step 3: Cross multiply
    120,891.52x = 166,778.55 × 75,490.68
  4. Step 4: Simplify right side
    120,891.52x = 12,590,226,148.91
  5. Step 5: Solve for x
    x = 12,590,226,148.91/120,891.52
  6. Step 6: Final answer
    x = 104,144.82

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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.