Home / 187,279.12-258,381.87-106,649.47

Finding the Fourth Proportional to 187,279.12, 258,381.87 and 106,649.47

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Solution

The fourth proportional to 187,279.12, 258,381.87 and 106,649.47 is: 147,140.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,279.12 : 258,381.87 = 106,649.47 : x
  2. Step 2: Convert to fraction form
    187,279.12/258,381.87 = 106,649.47/x
  3. Step 3: Cross multiply
    187,279.12x = 258,381.87 × 106,649.47
  4. Step 4: Simplify right side
    187,279.12x = 27,556,289,493.11
  5. Step 5: Solve for x
    x = 27,556,289,493.11/187,279.12
  6. Step 6: Final answer
    x = 147,140.21

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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.