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Finding the Fourth Proportional to 118,296.60, 177,444.90 and 71,640.60

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Solution

The fourth proportional to 118,296.60, 177,444.90 and 71,640.60 is: 107,460.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,296.60 : 177,444.90 = 71,640.60 : x
  2. Step 2: Convert to fraction form
    118,296.60/177,444.90 = 71,640.60/x
  3. Step 3: Cross multiply
    118,296.60x = 177,444.90 × 71,640.60
  4. Step 4: Simplify right side
    118,296.60x = 12,712,259,102.94
  5. Step 5: Solve for x
    x = 12,712,259,102.94/118,296.60
  6. Step 6: Final answer
    x = 107,460.90

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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.