Home / 137,966.66-190,393.80-80,645.39

Finding the Fourth Proportional to 137,966.66, 190,393.80 and 80,645.39

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Solution

The fourth proportional to 137,966.66, 190,393.80 and 80,645.39 is: 111,290.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,966.66 : 190,393.80 = 80,645.39 : x
  2. Step 2: Convert to fraction form
    137,966.66/190,393.80 = 80,645.39/x
  3. Step 3: Cross multiply
    137,966.66x = 190,393.80 × 80,645.39
  4. Step 4: Simplify right side
    137,966.66x = 15,354,382,254.58
  5. Step 5: Solve for x
    x = 15,354,382,254.58/137,966.66
  6. Step 6: Final answer
    x = 111,290.53

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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.