Home / 140,306.76-193,620.90-76,642.92

Finding the Fourth Proportional to 140,306.76, 193,620.90 and 76,642.92

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Solution

The fourth proportional to 140,306.76, 193,620.90 and 76,642.92 is: 105,765.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,306.76 : 193,620.90 = 76,642.92 : x
  2. Step 2: Convert to fraction form
    140,306.76/193,620.90 = 76,642.92/x
  3. Step 3: Cross multiply
    140,306.76x = 193,620.90 × 76,642.92
  4. Step 4: Simplify right side
    140,306.76x = 14,839,671,149.03
  5. Step 5: Solve for x
    x = 14,839,671,149.03/140,306.76
  6. Step 6: Final answer
    x = 105,765.90

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1.5x scale

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.