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Finding the Fourth Proportional to 127,871.40, 191,807.10 and 104,251.80

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Solution

The fourth proportional to 127,871.40, 191,807.10 and 104,251.80 is: 156,377.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,871.40 : 191,807.10 = 104,251.80 : x
  2. Step 2: Convert to fraction form
    127,871.40/191,807.10 = 104,251.80/x
  3. Step 3: Cross multiply
    127,871.40x = 191,807.10 × 104,251.80
  4. Step 4: Simplify right side
    127,871.40x = 19,996,235,427.78
  5. Step 5: Solve for x
    x = 19,996,235,427.78/127,871.40
  6. Step 6: Final answer
    x = 156,377.70

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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.