Home / 140,138.48-193,395.18-76,480.38

Finding the Fourth Proportional to 140,138.48, 193,395.18 and 76,480.38

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Solution

The fourth proportional to 140,138.48, 193,395.18 and 76,480.38 is: 105,545.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,138.48 : 193,395.18 = 76,480.38 : x
  2. Step 2: Convert to fraction form
    140,138.48/193,395.18 = 76,480.38/x
  3. Step 3: Cross multiply
    140,138.48x = 193,395.18 × 76,480.38
  4. Step 4: Simplify right side
    140,138.48x = 14,790,936,856.57
  5. Step 5: Solve for x
    x = 14,790,936,856.57/140,138.48
  6. Step 6: Final answer
    x = 105,545.15

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1.5x scale

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.