Home / 108,243.65-149,279.18-90,154.43

Finding the Fourth Proportional to 108,243.65, 149,279.18 and 90,154.43

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Solution

The fourth proportional to 108,243.65, 149,279.18 and 90,154.43 is: 124,332.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,243.65 : 149,279.18 = 90,154.43 : x
  2. Step 2: Convert to fraction form
    108,243.65/149,279.18 = 90,154.43/x
  3. Step 3: Cross multiply
    108,243.65x = 149,279.18 × 90,154.43
  4. Step 4: Simplify right side
    108,243.65x = 13,458,179,982.35
  5. Step 5: Solve for x
    x = 13,458,179,982.35/108,243.65
  6. Step 6: Final answer
    x = 124,332.28

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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.