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Finding the Fourth Proportional to 118,281.60, 177,422.40 and 71,625.60

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Solution

The fourth proportional to 118,281.60, 177,422.40 and 71,625.60 is: 107,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,281.60 : 177,422.40 = 71,625.60 : x
  2. Step 2: Convert to fraction form
    118,281.60/177,422.40 = 71,625.60/x
  3. Step 3: Cross multiply
    118,281.60x = 177,422.40 × 71,625.60
  4. Step 4: Simplify right side
    118,281.60x = 12,707,985,853.44
  5. Step 5: Solve for x
    x = 12,707,985,853.44/118,281.60
  6. Step 6: Final answer
    x = 107,438.40

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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.