Home / 140,572.20-193,981.38-76,897.32

Finding the Fourth Proportional to 140,572.20, 193,981.38 and 76,897.32

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Solution

The fourth proportional to 140,572.20, 193,981.38 and 76,897.32 is: 106,113.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,572.20 : 193,981.38 = 76,897.32 : x
  2. Step 2: Convert to fraction form
    140,572.20/193,981.38 = 76,897.32/x
  3. Step 3: Cross multiply
    140,572.20x = 193,981.38 × 76,897.32
  4. Step 4: Simplify right side
    140,572.20x = 14,916,648,251.90
  5. Step 5: Solve for x
    x = 14,916,648,251.90/140,572.20
  6. Step 6: Final answer
    x = 106,113.79

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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.