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Finding the Fourth Proportional to 157,591.85, 217,476.46 and 85,971.88

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Solution

The fourth proportional to 157,591.85, 217,476.46 and 85,971.88 is: 118,641.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,591.85 : 217,476.46 = 85,971.88 : x
  2. Step 2: Convert to fraction form
    157,591.85/217,476.46 = 85,971.88/x
  3. Step 3: Cross multiply
    157,591.85x = 217,476.46 × 85,971.88
  4. Step 4: Simplify right side
    157,591.85x = 18,696,860,501.26
  5. Step 5: Solve for x
    x = 18,696,860,501.26/157,591.85
  6. Step 6: Final answer
    x = 118,641.04

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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.