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Finding the Fourth Proportional to 159,725.52, 220,434.21 and 88,119.90

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Solution

The fourth proportional to 159,725.52, 220,434.21 and 88,119.90 is: 121,612.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,725.52 : 220,434.21 = 88,119.90 : x
  2. Step 2: Convert to fraction form
    159,725.52/220,434.21 = 88,119.90/x
  3. Step 3: Cross multiply
    159,725.52x = 220,434.21 × 88,119.90
  4. Step 4: Simplify right side
    159,725.52x = 19,424,640,541.78
  5. Step 5: Solve for x
    x = 19,424,640,541.78/159,725.52
  6. Step 6: Final answer
    x = 121,612.63

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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.