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Finding the Fourth Proportional to 159,755.74, 220,461.69 and 88,138.78

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Solution

The fourth proportional to 159,755.74, 220,461.69 and 88,138.78 is: 121,630.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,755.74 : 220,461.69 = 88,138.78 : x
  2. Step 2: Convert to fraction form
    159,755.74/220,461.69 = 88,138.78/x
  3. Step 3: Cross multiply
    159,755.74x = 220,461.69 × 88,138.78
  4. Step 4: Simplify right side
    159,755.74x = 19,431,224,393.34
  5. Step 5: Solve for x
    x = 19,431,224,393.34/159,755.74
  6. Step 6: Final answer
    x = 121,630.84

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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.