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Finding the Fourth Proportional to 140,600.40, 211,105.40 and 99,230.80

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Solution

The fourth proportional to 140,600.40, 211,105.40 and 99,230.80 is: 148,990.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,600.40 : 211,105.40 = 99,230.80 : x
  2. Step 2: Convert to fraction form
    140,600.40/211,105.40 = 99,230.80/x
  3. Step 3: Cross multiply
    140,600.40x = 211,105.40 × 99,230.80
  4. Step 4: Simplify right side
    140,600.40x = 20,948,157,726.32
  5. Step 5: Solve for x
    x = 20,948,157,726.32/140,600.40
  6. Step 6: Final answer
    x = 148,990.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.