Home / 103,578.57-142,921.67-58,253.85

Finding the Fourth Proportional to 103,578.57, 142,921.67 and 58,253.85

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Solution

The fourth proportional to 103,578.57, 142,921.67 and 58,253.85 is: 80,380.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,578.57 : 142,921.67 = 58,253.85 : x
  2. Step 2: Convert to fraction form
    103,578.57/142,921.67 = 58,253.85/x
  3. Step 3: Cross multiply
    103,578.57x = 142,921.67 × 58,253.85
  4. Step 4: Simplify right side
    103,578.57x = 8,325,737,234.66
  5. Step 5: Solve for x
    x = 8,325,737,234.66/103,578.57
  6. Step 6: Final answer
    x = 80,380.89

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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.