Home / 140,543.68-193,945.28-80,133.76

Finding the Fourth Proportional to 140,543.68, 193,945.28 and 80,133.76

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Solution

The fourth proportional to 140,543.68, 193,945.28 and 80,133.76 is: 110,581.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,543.68 : 193,945.28 = 80,133.76 : x
  2. Step 2: Convert to fraction form
    140,543.68/193,945.28 = 80,133.76/x
  3. Step 3: Cross multiply
    140,543.68x = 193,945.28 × 80,133.76
  4. Step 4: Simplify right side
    140,543.68x = 15,541,564,520.65
  5. Step 5: Solve for x
    x = 15,541,564,520.65/140,543.68
  6. Step 6: Final answer
    x = 110,581.74

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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.