Home / 117,987.13-162,882.60-79,947.71

Finding the Fourth Proportional to 117,987.13, 162,882.60 and 79,947.71

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Solution

The fourth proportional to 117,987.13, 162,882.60 and 79,947.71 is: 110,368.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,987.13 : 162,882.60 = 79,947.71 : x
  2. Step 2: Convert to fraction form
    117,987.13/162,882.60 = 79,947.71/x
  3. Step 3: Cross multiply
    117,987.13x = 162,882.60 × 79,947.71
  4. Step 4: Simplify right side
    117,987.13x = 13,022,090,365.44
  5. Step 5: Solve for x
    x = 13,022,090,365.44/117,987.13
  6. Step 6: Final answer
    x = 110,368.73

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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.