Home / 142,758.68-196,917.84-91,837.88

Finding the Fourth Proportional to 142,758.68, 196,917.84 and 91,837.88

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Solution

The fourth proportional to 142,758.68, 196,917.84 and 91,837.88 is: 126,678.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,758.68 : 196,917.84 = 91,837.88 : x
  2. Step 2: Convert to fraction form
    142,758.68/196,917.84 = 91,837.88/x
  3. Step 3: Cross multiply
    142,758.68x = 196,917.84 × 91,837.88
  4. Step 4: Simplify right side
    142,758.68x = 18,084,516,959.78
  5. Step 5: Solve for x
    x = 18,084,516,959.78/142,758.68
  6. Step 6: Final answer
    x = 126,678.93

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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.