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Finding the Fourth Proportional to 160,689.60, 221,753.88 and 88,099.31

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Solution

The fourth proportional to 160,689.60, 221,753.88 and 88,099.31 is: 121,578.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,689.60 : 221,753.88 = 88,099.31 : x
  2. Step 2: Convert to fraction form
    160,689.60/221,753.88 = 88,099.31/x
  3. Step 3: Cross multiply
    160,689.60x = 221,753.88 × 88,099.31
  4. Step 4: Simplify right side
    160,689.60x = 19,536,364,372.21
  5. Step 5: Solve for x
    x = 19,536,364,372.21/160,689.60
  6. Step 6: Final answer
    x = 121,578.27

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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.