Home / 136,531.31-188,494.04-121,382.13

Finding the Fourth Proportional to 136,531.31, 188,494.04 and 121,382.13

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Solution

The fourth proportional to 136,531.31, 188,494.04 and 121,382.13 is: 167,579.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,531.31 : 188,494.04 = 121,382.13 : x
  2. Step 2: Convert to fraction form
    136,531.31/188,494.04 = 121,382.13/x
  3. Step 3: Cross multiply
    136,531.31x = 188,494.04 × 121,382.13
  4. Step 4: Simplify right side
    136,531.31x = 22,879,806,867.54
  5. Step 5: Solve for x
    x = 22,879,806,867.54/136,531.31
  6. Step 6: Final answer
    x = 167,579.20

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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.