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Finding the Fourth Proportional to 118,528.20, 177,543.90 and 55,402.20

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Solution

The fourth proportional to 118,528.20, 177,543.90 and 55,402.20 is: 82,987.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,528.20 : 177,543.90 = 55,402.20 : x
  2. Step 2: Convert to fraction form
    118,528.20/177,543.90 = 55,402.20/x
  3. Step 3: Cross multiply
    118,528.20x = 177,543.90 × 55,402.20
  4. Step 4: Simplify right side
    118,528.20x = 9,836,322,656.58
  5. Step 5: Solve for x
    x = 9,836,322,656.58/118,528.20
  6. Step 6: Final answer
    x = 82,987.19

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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.