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Finding the Fourth Proportional to 127,551.60, 191,347.65 and 43,319.70

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Solution

The fourth proportional to 127,551.60, 191,347.65 and 43,319.70 is: 64,986.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,551.60 : 191,347.65 = 43,319.70 : x
  2. Step 2: Convert to fraction form
    127,551.60/191,347.65 = 43,319.70/x
  3. Step 3: Cross multiply
    127,551.60x = 191,347.65 × 43,319.70
  4. Step 4: Simplify right side
    127,551.60x = 8,289,122,793.71
  5. Step 5: Solve for x
    x = 8,289,122,793.71/127,551.60
  6. Step 6: Final answer
    x = 64,986.43

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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.