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Finding the Fourth Proportional to 159,761.96, 220,460.13 and 89,921.45

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Solution

The fourth proportional to 159,761.96, 220,460.13 and 89,921.45 is: 124,085.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,761.96 : 220,460.13 = 89,921.45 : x
  2. Step 2: Convert to fraction form
    159,761.96/220,460.13 = 89,921.45/x
  3. Step 3: Cross multiply
    159,761.96x = 220,460.13 × 89,921.45
  4. Step 4: Simplify right side
    159,761.96x = 19,824,094,556.79
  5. Step 5: Solve for x
    x = 19,824,094,556.79/159,761.96
  6. Step 6: Final answer
    x = 124,085.20

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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.