Home / 156,789.69-216,459.54-103,230.39

Finding the Fourth Proportional to 156,789.69, 216,459.54 and 103,230.39

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Solution

The fourth proportional to 156,789.69, 216,459.54 and 103,230.39 is: 142,517.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,789.69 : 216,459.54 = 103,230.39 : x
  2. Step 2: Convert to fraction form
    156,789.69/216,459.54 = 103,230.39/x
  3. Step 3: Cross multiply
    156,789.69x = 216,459.54 × 103,230.39
  4. Step 4: Simplify right side
    156,789.69x = 22,345,202,733.42
  5. Step 5: Solve for x
    x = 22,345,202,733.42/156,789.69
  6. Step 6: Final answer
    x = 142,517.04

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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.