Home / 103,937.40-143,472.32-80,921.52

Finding the Fourth Proportional to 103,937.40, 143,472.32 and 80,921.52

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Solution

The fourth proportional to 103,937.40, 143,472.32 and 80,921.52 is: 111,701.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,937.40 : 143,472.32 = 80,921.52 : x
  2. Step 2: Convert to fraction form
    103,937.40/143,472.32 = 80,921.52/x
  3. Step 3: Cross multiply
    103,937.40x = 143,472.32 × 80,921.52
  4. Step 4: Simplify right side
    103,937.40x = 11,609,998,212.33
  5. Step 5: Solve for x
    x = 11,609,998,212.33/103,937.40
  6. Step 6: Final answer
    x = 111,701.83

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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.