Home / 126,251.52-189,629.40-78,950.76

Finding the Fourth Proportional to 126,251.52, 189,629.40 and 78,950.76

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Solution

The fourth proportional to 126,251.52, 189,629.40 and 78,950.76 is: 118,583.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,251.52 : 189,629.40 = 78,950.76 : x
  2. Step 2: Convert to fraction form
    126,251.52/189,629.40 = 78,950.76/x
  3. Step 3: Cross multiply
    126,251.52x = 189,629.40 × 78,950.76
  4. Step 4: Simplify right side
    126,251.52x = 14,971,385,248.34
  5. Step 5: Solve for x
    x = 14,971,385,248.34/126,251.52
  6. Step 6: Final answer
    x = 118,583.80

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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.