Home / 156,691.20-216,234-85,071.18

Finding the Fourth Proportional to 156,691.20, 216,234 and 85,071.18

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Solution

The fourth proportional to 156,691.20, 216,234 and 85,071.18 is: 117,398.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,691.20 : 216,234 = 85,071.18 : x
  2. Step 2: Convert to fraction form
    156,691.20/216,234 = 85,071.18/x
  3. Step 3: Cross multiply
    156,691.20x = 216,234 × 85,071.18
  4. Step 4: Simplify right side
    156,691.20x = 18,395,281,536.12
  5. Step 5: Solve for x
    x = 18,395,281,536.12/156,691.20
  6. Step 6: Final answer
    x = 117,398.31

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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.