Home / 187,387.78-281,111.07-80,802.04

Finding the Fourth Proportional to 187,387.78, 281,111.07 and 80,802.04

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Solution

The fourth proportional to 187,387.78, 281,111.07 and 80,802.04 is: 121,215.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,387.78 : 281,111.07 = 80,802.04 : x
  2. Step 2: Convert to fraction form
    187,387.78/281,111.07 = 80,802.04/x
  3. Step 3: Cross multiply
    187,387.78x = 281,111.07 × 80,802.04
  4. Step 4: Simplify right side
    187,387.78x = 22,714,347,922.58
  5. Step 5: Solve for x
    x = 22,714,347,922.58/187,387.78
  6. Step 6: Final answer
    x = 121,215.74

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1.5x scale

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.