Home / 123,856.32-170,923.68-70,139.88

Finding the Fourth Proportional to 123,856.32, 170,923.68 and 70,139.88

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Solution

The fourth proportional to 123,856.32, 170,923.68 and 70,139.88 is: 96,794.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,856.32 : 170,923.68 = 70,139.88 : x
  2. Step 2: Convert to fraction form
    123,856.32/170,923.68 = 70,139.88/x
  3. Step 3: Cross multiply
    123,856.32x = 170,923.68 × 70,139.88
  4. Step 4: Simplify right side
    123,856.32x = 11,988,566,404.36
  5. Step 5: Solve for x
    x = 11,988,566,404.36/123,856.32
  6. Step 6: Final answer
    x = 96,794.14

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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.