Home / 100,574.24-138,678.68-64,227.92

Finding the Fourth Proportional to 100,574.24, 138,678.68 and 64,227.92

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Solution

The fourth proportional to 100,574.24, 138,678.68 and 64,227.92 is: 88,561.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,574.24 : 138,678.68 = 64,227.92 : x
  2. Step 2: Convert to fraction form
    100,574.24/138,678.68 = 64,227.92/x
  3. Step 3: Cross multiply
    100,574.24x = 138,678.68 × 64,227.92
  4. Step 4: Simplify right side
    100,574.24x = 8,907,043,164.75
  5. Step 5: Solve for x
    x = 8,907,043,164.75/100,574.24
  6. Step 6: Final answer
    x = 88,561.87

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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.