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Finding the Fourth Proportional to 126,732.87, 174,711.06 and 86,394.87

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Solution

The fourth proportional to 126,732.87, 174,711.06 and 86,394.87 is: 119,102.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,732.87 : 174,711.06 = 86,394.87 : x
  2. Step 2: Convert to fraction form
    126,732.87/174,711.06 = 86,394.87/x
  3. Step 3: Cross multiply
    126,732.87x = 174,711.06 × 86,394.87
  4. Step 4: Simplify right side
    126,732.87x = 15,094,139,316.26
  5. Step 5: Solve for x
    x = 15,094,139,316.26/126,732.87
  6. Step 6: Final answer
    x = 119,102.01

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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.