Home / 140,338.12-193,679.76-76,685.35

Finding the Fourth Proportional to 140,338.12, 193,679.76 and 76,685.35

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Solution

The fourth proportional to 140,338.12, 193,679.76 and 76,685.35 is: 105,832.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,338.12 : 193,679.76 = 76,685.35 : x
  2. Step 2: Convert to fraction form
    140,338.12/193,679.76 = 76,685.35/x
  3. Step 3: Cross multiply
    140,338.12x = 193,679.76 × 76,685.35
  4. Step 4: Simplify right side
    140,338.12x = 14,852,400,183.52
  5. Step 5: Solve for x
    x = 14,852,400,183.52/140,338.12
  6. Step 6: Final answer
    x = 105,832.97

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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.