Home / 140,245.10-193,545.49-85,780.20

Finding the Fourth Proportional to 140,245.10, 193,545.49 and 85,780.20

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Solution

The fourth proportional to 140,245.10, 193,545.49 and 85,780.20 is: 118,381.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,245.10 : 193,545.49 = 85,780.20 : x
  2. Step 2: Convert to fraction form
    140,245.10/193,545.49 = 85,780.20/x
  3. Step 3: Cross multiply
    140,245.10x = 193,545.49 × 85,780.20
  4. Step 4: Simplify right side
    140,245.10x = 16,602,369,873.57
  5. Step 5: Solve for x
    x = 16,602,369,873.57/140,245.10
  6. Step 6: Final answer
    x = 118,381.10

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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.