Home / 140,453.61-193,778.51-79,981.38

Finding the Fourth Proportional to 140,453.61, 193,778.51 and 79,981.38

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Solution

The fourth proportional to 140,453.61, 193,778.51 and 79,981.38 is: 110,347.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,453.61 : 193,778.51 = 79,981.38 : x
  2. Step 2: Convert to fraction form
    140,453.61/193,778.51 = 79,981.38/x
  3. Step 3: Cross multiply
    140,453.61x = 193,778.51 × 79,981.38
  4. Step 4: Simplify right side
    140,453.61x = 15,498,672,244.24
  5. Step 5: Solve for x
    x = 15,498,672,244.24/140,453.61
  6. Step 6: Final answer
    x = 110,347.27

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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.