Home / 104,235.88-143,781.33-90,839.29

Finding the Fourth Proportional to 104,235.88, 143,781.33 and 90,839.29

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Solution

The fourth proportional to 104,235.88, 143,781.33 and 90,839.29 is: 125,302.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,235.88 : 143,781.33 = 90,839.29 : x
  2. Step 2: Convert to fraction form
    104,235.88/143,781.33 = 90,839.29/x
  3. Step 3: Cross multiply
    104,235.88x = 143,781.33 × 90,839.29
  4. Step 4: Simplify right side
    104,235.88x = 13,060,993,932.46
  5. Step 5: Solve for x
    x = 13,060,993,932.46/104,235.88
  6. Step 6: Final answer
    x = 125,302.28

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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.