Home / 187,979.12-281,795.80-81,296.24

Finding the Fourth Proportional to 187,979.12, 281,795.80 and 81,296.24

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Solution

The fourth proportional to 187,979.12, 281,795.80 and 81,296.24 is: 121,869.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,979.12 : 281,795.80 = 81,296.24 : x
  2. Step 2: Convert to fraction form
    187,979.12/281,795.80 = 81,296.24/x
  3. Step 3: Cross multiply
    187,979.12x = 281,795.80 × 81,296.24
  4. Step 4: Simplify right side
    187,979.12x = 22,908,938,987.79
  5. Step 5: Solve for x
    x = 22,908,938,987.79/187,979.12
  6. Step 6: Final answer
    x = 121,869.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.