Home / 243,721.80-336,333.78-136,290.60

Finding the Fourth Proportional to 243,721.80, 336,333.78 and 136,290.60

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Solution

The fourth proportional to 243,721.80, 336,333.78 and 136,290.60 is: 188,079.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,721.80 : 336,333.78 = 136,290.60 : x
  2. Step 2: Convert to fraction form
    243,721.80/336,333.78 = 136,290.60/x
  3. Step 3: Cross multiply
    243,721.80x = 336,333.78 × 136,290.60
  4. Step 4: Simplify right side
    243,721.80x = 45,839,132,676.47
  5. Step 5: Solve for x
    x = 45,839,132,676.47/243,721.80
  6. Step 6: Final answer
    x = 188,079.74

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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.