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Finding the Fourth Proportional to 156,392.60, 215,825.04 and 88,405.52

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Solution

The fourth proportional to 156,392.60, 215,825.04 and 88,405.52 is: 122,001.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,392.60 : 215,825.04 = 88,405.52 : x
  2. Step 2: Convert to fraction form
    156,392.60/215,825.04 = 88,405.52/x
  3. Step 3: Cross multiply
    156,392.60x = 215,825.04 × 88,405.52
  4. Step 4: Simplify right side
    156,392.60x = 19,080,123,811.10
  5. Step 5: Solve for x
    x = 19,080,123,811.10/156,392.60
  6. Step 6: Final answer
    x = 122,001.45

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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.