Home / 103,040.20-154,560.30-53,103.70

Finding the Fourth Proportional to 103,040.20, 154,560.30 and 53,103.70

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Solution

The fourth proportional to 103,040.20, 154,560.30 and 53,103.70 is: 79,655.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,040.20 : 154,560.30 = 53,103.70 : x
  2. Step 2: Convert to fraction form
    103,040.20/154,560.30 = 53,103.70/x
  3. Step 3: Cross multiply
    103,040.20x = 154,560.30 × 53,103.70
  4. Step 4: Simplify right side
    103,040.20x = 8,207,723,803.11
  5. Step 5: Solve for x
    x = 8,207,723,803.11/103,040.20
  6. Step 6: Final answer
    x = 79,655.55

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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.