Home / 140,390.40-193,748.12-79,151.72

Finding the Fourth Proportional to 140,390.40, 193,748.12 and 79,151.72

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Solution

The fourth proportional to 140,390.40, 193,748.12 and 79,151.72 is: 109,234.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,390.40 : 193,748.12 = 79,151.72 : x
  2. Step 2: Convert to fraction form
    140,390.40/193,748.12 = 79,151.72/x
  3. Step 3: Cross multiply
    140,390.40x = 193,748.12 × 79,151.72
  4. Step 4: Simplify right side
    140,390.40x = 15,335,496,944.77
  5. Step 5: Solve for x
    x = 15,335,496,944.77/140,390.40
  6. Step 6: Final answer
    x = 109,234.66

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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.