Home / 142,079.66-196,066.92-77,546.75

Finding the Fourth Proportional to 142,079.66, 196,066.92 and 77,546.75

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Solution

The fourth proportional to 142,079.66, 196,066.92 and 77,546.75 is: 107,012.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,079.66 : 196,066.92 = 77,546.75 : x
  2. Step 2: Convert to fraction form
    142,079.66/196,066.92 = 77,546.75/x
  3. Step 3: Cross multiply
    142,079.66x = 196,066.92 × 77,546.75
  4. Step 4: Simplify right side
    142,079.66x = 15,204,351,448.18
  5. Step 5: Solve for x
    x = 15,204,351,448.18/142,079.66
  6. Step 6: Final answer
    x = 107,012.87

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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.