Home / 140,139.98-193,397.25-76,481.87

Finding the Fourth Proportional to 140,139.98, 193,397.25 and 76,481.87

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Solution

The fourth proportional to 140,139.98, 193,397.25 and 76,481.87 is: 105,547.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,139.98 : 193,397.25 = 76,481.87 : x
  2. Step 2: Convert to fraction form
    140,139.98/193,397.25 = 76,481.87/x
  3. Step 3: Cross multiply
    140,139.98x = 193,397.25 × 76,481.87
  4. Step 4: Simplify right side
    140,139.98x = 14,791,383,332.86
  5. Step 5: Solve for x
    x = 14,791,383,332.86/140,139.98
  6. Step 6: Final answer
    x = 105,547.21

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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.