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Finding the Fourth Proportional to 159,725.79, 220,422.47 and 88,105.79

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Solution

The fourth proportional to 159,725.79, 220,422.47 and 88,105.79 is: 121,586.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,725.79 : 220,422.47 = 88,105.79 : x
  2. Step 2: Convert to fraction form
    159,725.79/220,422.47 = 88,105.79/x
  3. Step 3: Cross multiply
    159,725.79x = 220,422.47 × 88,105.79
  4. Step 4: Simplify right side
    159,725.79x = 19,420,495,963.63
  5. Step 5: Solve for x
    x = 19,420,495,963.63/159,725.79
  6. Step 6: Final answer
    x = 121,586.48

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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.