Home / 138,465.39-190,979.60-88,180.59

Finding the Fourth Proportional to 138,465.39, 190,979.60 and 88,180.59

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Solution

The fourth proportional to 138,465.39, 190,979.60 and 88,180.59 is: 121,623.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,465.39 : 190,979.60 = 88,180.59 : x
  2. Step 2: Convert to fraction form
    138,465.39/190,979.60 = 88,180.59/x
  3. Step 3: Cross multiply
    138,465.39x = 190,979.60 × 88,180.59
  4. Step 4: Simplify right side
    138,465.39x = 16,840,693,365.06
  5. Step 5: Solve for x
    x = 16,840,693,365.06/138,465.39
  6. Step 6: Final answer
    x = 121,623.85

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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.