Home / 142,231.28-196,279.83-77,701.43

Finding the Fourth Proportional to 142,231.28, 196,279.83 and 77,701.43

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Solution

The fourth proportional to 142,231.28, 196,279.83 and 77,701.43 is: 107,228.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,231.28 : 196,279.83 = 77,701.43 : x
  2. Step 2: Convert to fraction form
    142,231.28/196,279.83 = 77,701.43/x
  3. Step 3: Cross multiply
    142,231.28x = 196,279.83 × 77,701.43
  4. Step 4: Simplify right side
    142,231.28x = 15,251,223,471.16
  5. Step 5: Solve for x
    x = 15,251,223,471.16/142,231.28
  6. Step 6: Final answer
    x = 107,228.34

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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.