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Finding the Fourth Proportional to 126,710.79, 174,790.70 and 81,337.83

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Solution

The fourth proportional to 126,710.79, 174,790.70 and 81,337.83 is: 112,201.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,710.79 : 174,790.70 = 81,337.83 : x
  2. Step 2: Convert to fraction form
    126,710.79/174,790.70 = 81,337.83/x
  3. Step 3: Cross multiply
    126,710.79x = 174,790.70 × 81,337.83
  4. Step 4: Simplify right side
    126,710.79x = 14,217,096,242.18
  5. Step 5: Solve for x
    x = 14,217,096,242.18/126,710.79
  6. Step 6: Final answer
    x = 112,201.15

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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.