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Finding the Fourth Proportional to 157,449.60, 217,279.04 and 85,829.60

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Solution

The fourth proportional to 157,449.60, 217,279.04 and 85,829.60 is: 118,444.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,449.60 : 217,279.04 = 85,829.60 : x
  2. Step 2: Convert to fraction form
    157,449.60/217,279.04 = 85,829.60/x
  3. Step 3: Cross multiply
    157,449.60x = 217,279.04 × 85,829.60
  4. Step 4: Simplify right side
    157,449.60x = 18,648,973,091.58
  5. Step 5: Solve for x
    x = 18,648,973,091.58/157,449.60
  6. Step 6: Final answer
    x = 118,444.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.