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Finding the Fourth Proportional to 157,648.48, 217,559.52 and 86,033.10

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Solution

The fourth proportional to 157,648.48, 217,559.52 and 86,033.10 is: 118,728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,648.48 : 217,559.52 = 86,033.10 : x
  2. Step 2: Convert to fraction form
    157,648.48/217,559.52 = 86,033.10/x
  3. Step 3: Cross multiply
    157,648.48x = 217,559.52 × 86,033.10
  4. Step 4: Simplify right side
    157,648.48x = 18,717,320,755.96
  5. Step 5: Solve for x
    x = 18,717,320,755.96/157,648.48
  6. Step 6: Final answer
    x = 118,728.21

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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.