Home / 144,721.19-199,724.45-81,062.88

Finding the Fourth Proportional to 144,721.19, 199,724.45 and 81,062.88

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Solution

The fourth proportional to 144,721.19, 199,724.45 and 81,062.88 is: 111,871.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,721.19 : 199,724.45 = 81,062.88 : x
  2. Step 2: Convert to fraction form
    144,721.19/199,724.45 = 81,062.88/x
  3. Step 3: Cross multiply
    144,721.19x = 199,724.45 × 81,062.88
  4. Step 4: Simplify right side
    144,721.19x = 16,190,238,718.10
  5. Step 5: Solve for x
    x = 16,190,238,718.10/144,721.19
  6. Step 6: Final answer
    x = 111,871.93

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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.