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Finding the Fourth Proportional to 104,465.60, 156,698.40 and 88,719.20

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Solution

The fourth proportional to 104,465.60, 156,698.40 and 88,719.20 is: 133,078.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,465.60 : 156,698.40 = 88,719.20 : x
  2. Step 2: Convert to fraction form
    104,465.60/156,698.40 = 88,719.20/x
  3. Step 3: Cross multiply
    104,465.60x = 156,698.40 × 88,719.20
  4. Step 4: Simplify right side
    104,465.60x = 13,902,156,689.28
  5. Step 5: Solve for x
    x = 13,902,156,689.28/104,465.60
  6. Step 6: Final answer
    x = 133,078.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.