Home / 126,251.48-189,629.40-78,950.72

Finding the Fourth Proportional to 126,251.48, 189,629.40 and 78,950.72

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Solution

The fourth proportional to 126,251.48, 189,629.40 and 78,950.72 is: 118,583.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,251.48 : 189,629.40 = 78,950.72 : x
  2. Step 2: Convert to fraction form
    126,251.48/189,629.40 = 78,950.72/x
  3. Step 3: Cross multiply
    126,251.48x = 189,629.40 × 78,950.72
  4. Step 4: Simplify right side
    126,251.48x = 14,971,377,663.17
  5. Step 5: Solve for x
    x = 14,971,377,663.17/126,251.48
  6. Step 6: Final answer
    x = 118,583.78

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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.