Home / 140,428.12-193,790.90-76,765.94

Finding the Fourth Proportional to 140,428.12, 193,790.90 and 76,765.94

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Solution

The fourth proportional to 140,428.12, 193,790.90 and 76,765.94 is: 105,937.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,428.12 : 193,790.90 = 76,765.94 : x
  2. Step 2: Convert to fraction form
    140,428.12/193,790.90 = 76,765.94/x
  3. Step 3: Cross multiply
    140,428.12x = 193,790.90 × 76,765.94
  4. Step 4: Simplify right side
    140,428.12x = 14,876,540,601.95
  5. Step 5: Solve for x
    x = 14,876,540,601.95/140,428.12
  6. Step 6: Final answer
    x = 105,937.05

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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.