Home / 142,133.46-196,144.30-78,471.26

Finding the Fourth Proportional to 142,133.46, 196,144.30 and 78,471.26

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Solution

The fourth proportional to 142,133.46, 196,144.30 and 78,471.26 is: 108,290.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,133.46 : 196,144.30 = 78,471.26 : x
  2. Step 2: Convert to fraction form
    142,133.46/196,144.30 = 78,471.26/x
  3. Step 3: Cross multiply
    142,133.46x = 196,144.30 × 78,471.26
  4. Step 4: Simplify right side
    142,133.46x = 15,391,690,215.73
  5. Step 5: Solve for x
    x = 15,391,690,215.73/142,133.46
  6. Step 6: Final answer
    x = 108,290.41

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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.