Home / 140,394.11-193,743.85-76,731.91

Finding the Fourth Proportional to 140,394.11, 193,743.85 and 76,731.91

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Solution

The fourth proportional to 140,394.11, 193,743.85 and 76,731.91 is: 105,890.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,394.11 : 193,743.85 = 76,731.91 : x
  2. Step 2: Convert to fraction form
    140,394.11/193,743.85 = 76,731.91/x
  3. Step 3: Cross multiply
    140,394.11x = 193,743.85 × 76,731.91
  4. Step 4: Simplify right side
    140,394.11x = 14,866,335,128.94
  5. Step 5: Solve for x
    x = 14,866,335,128.94/140,394.11
  6. Step 6: Final answer
    x = 105,890.02

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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.