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Finding the Fourth Proportional to 157,370.62, 217,168.65 and 85,751.26

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Solution

The fourth proportional to 157,370.62, 217,168.65 and 85,751.26 is: 118,335.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,370.62 : 217,168.65 = 85,751.26 : x
  2. Step 2: Convert to fraction form
    157,370.62/217,168.65 = 85,751.26/x
  3. Step 3: Cross multiply
    157,370.62x = 217,168.65 × 85,751.26
  4. Step 4: Simplify right side
    157,370.62x = 18,622,485,370.00
  5. Step 5: Solve for x
    x = 18,622,485,370.00/157,370.62
  6. Step 6: Final answer
    x = 118,335.21

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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.