Home / 110,979.28-153,162.03-65,671.66

Finding the Fourth Proportional to 110,979.28, 153,162.03 and 65,671.66

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Solution

The fourth proportional to 110,979.28, 153,162.03 and 65,671.66 is: 90,633.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,979.28 : 153,162.03 = 65,671.66 : x
  2. Step 2: Convert to fraction form
    110,979.28/153,162.03 = 65,671.66/x
  3. Step 3: Cross multiply
    110,979.28x = 153,162.03 × 65,671.66
  4. Step 4: Simplify right side
    110,979.28x = 10,058,404,759.07
  5. Step 5: Solve for x
    x = 10,058,404,759.07/110,979.28
  6. Step 6: Final answer
    x = 90,633.18

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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.