Home / 103,732.80-143,125.92-58,401.60

Finding the Fourth Proportional to 103,732.80, 143,125.92 and 58,401.60

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Solution

The fourth proportional to 103,732.80, 143,125.92 and 58,401.60 is: 80,579.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,732.80 : 143,125.92 = 58,401.60 : x
  2. Step 2: Convert to fraction form
    103,732.80/143,125.92 = 58,401.60/x
  3. Step 3: Cross multiply
    103,732.80x = 143,125.92 × 58,401.60
  4. Step 4: Simplify right side
    103,732.80x = 8,358,782,729.47
  5. Step 5: Solve for x
    x = 8,358,782,729.47/103,732.80
  6. Step 6: Final answer
    x = 80,579.94

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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.