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Finding the Fourth Proportional to 127,404.60, 191,252.70 and 74,843.70

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Solution

The fourth proportional to 127,404.60, 191,252.70 and 74,843.70 is: 112,351.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,404.60 : 191,252.70 = 74,843.70 : x
  2. Step 2: Convert to fraction form
    127,404.60/191,252.70 = 74,843.70/x
  3. Step 3: Cross multiply
    127,404.60x = 191,252.70 × 74,843.70
  4. Step 4: Simplify right side
    127,404.60x = 14,314,059,702.99
  5. Step 5: Solve for x
    x = 14,314,059,702.99/127,404.60
  6. Step 6: Final answer
    x = 112,351.20

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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.