Home / 156,443.28-215,830.65-102,059.39

Finding the Fourth Proportional to 156,443.28, 215,830.65 and 102,059.39

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Solution

The fourth proportional to 156,443.28, 215,830.65 and 102,059.39 is: 140,802.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,443.28 : 215,830.65 = 102,059.39 : x
  2. Step 2: Convert to fraction form
    156,443.28/215,830.65 = 102,059.39/x
  3. Step 3: Cross multiply
    156,443.28x = 215,830.65 × 102,059.39
  4. Step 4: Simplify right side
    156,443.28x = 22,027,543,403.15
  5. Step 5: Solve for x
    x = 22,027,543,403.15/156,443.28
  6. Step 6: Final answer
    x = 140,802.11

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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.