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Finding the Fourth Proportional to 127,339.62, 191,089.62 and 71,216.46

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Solution

The fourth proportional to 127,339.62, 191,089.62 and 71,216.46 is: 106,869.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,339.62 : 191,089.62 = 71,216.46 : x
  2. Step 2: Convert to fraction form
    127,339.62/191,089.62 = 71,216.46/x
  3. Step 3: Cross multiply
    127,339.62x = 191,089.62 × 71,216.46
  4. Step 4: Simplify right side
    127,339.62x = 13,608,726,279.15
  5. Step 5: Solve for x
    x = 13,608,726,279.15/127,339.62
  6. Step 6: Final answer
    x = 106,869.54

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1.5x scale

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.