Home / 126,502.39-189,753.60-51,657.78

Finding the Fourth Proportional to 126,502.39, 189,753.60 and 51,657.78

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Solution

The fourth proportional to 126,502.39, 189,753.60 and 51,657.78 is: 77,486.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,502.39 : 189,753.60 = 51,657.78 : x
  2. Step 2: Convert to fraction form
    126,502.39/189,753.60 = 51,657.78/x
  3. Step 3: Cross multiply
    126,502.39x = 189,753.60 × 51,657.78
  4. Step 4: Simplify right side
    126,502.39x = 9,802,250,628.30
  5. Step 5: Solve for x
    x = 9,802,250,628.30/126,502.39
  6. Step 6: Final answer
    x = 77,486.68

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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.