Home / 136,488.13-188,351.04-74,399.16

Finding the Fourth Proportional to 136,488.13, 188,351.04 and 74,399.16

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Solution

The fourth proportional to 136,488.13, 188,351.04 and 74,399.16 is: 102,669.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,488.13 : 188,351.04 = 74,399.16 : x
  2. Step 2: Convert to fraction form
    136,488.13/188,351.04 = 74,399.16/x
  3. Step 3: Cross multiply
    136,488.13x = 188,351.04 × 74,399.16
  4. Step 4: Simplify right side
    136,488.13x = 14,013,159,161.13
  5. Step 5: Solve for x
    x = 14,013,159,161.13/136,488.13
  6. Step 6: Final answer
    x = 102,669.43

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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.