Home / 136,320.57-188,279.84-90,919.66

Finding the Fourth Proportional to 136,320.57, 188,279.84 and 90,919.66

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Solution

The fourth proportional to 136,320.57, 188,279.84 and 90,919.66 is: 125,574.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,320.57 : 188,279.84 = 90,919.66 : x
  2. Step 2: Convert to fraction form
    136,320.57/188,279.84 = 90,919.66/x
  3. Step 3: Cross multiply
    136,320.57x = 188,279.84 × 90,919.66
  4. Step 4: Simplify right side
    136,320.57x = 17,118,339,037.65
  5. Step 5: Solve for x
    x = 17,118,339,037.65/136,320.57
  6. Step 6: Final answer
    x = 125,574.15

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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.