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Finding the Fourth Proportional to 156,851.55, 216,454.39 and 88,868.40

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Solution

The fourth proportional to 156,851.55, 216,454.39 and 88,868.40 is: 122,637.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,851.55 : 216,454.39 = 88,868.40 : x
  2. Step 2: Convert to fraction form
    156,851.55/216,454.39 = 88,868.40/x
  3. Step 3: Cross multiply
    156,851.55x = 216,454.39 × 88,868.40
  4. Step 4: Simplify right side
    156,851.55x = 19,235,955,312.28
  5. Step 5: Solve for x
    x = 19,235,955,312.28/156,851.55
  6. Step 6: Final answer
    x = 122,637.97

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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.