Home / 120,042.76-180,103.02-57,705.16

Finding the Fourth Proportional to 120,042.76, 180,103.02 and 57,705.16

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Solution

The fourth proportional to 120,042.76, 180,103.02 and 57,705.16 is: 86,576.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,042.76 : 180,103.02 = 57,705.16 : x
  2. Step 2: Convert to fraction form
    120,042.76/180,103.02 = 57,705.16/x
  3. Step 3: Cross multiply
    120,042.76x = 180,103.02 × 57,705.16
  4. Step 4: Simplify right side
    120,042.76x = 10,392,873,585.58
  5. Step 5: Solve for x
    x = 10,392,873,585.58/120,042.76
  6. Step 6: Final answer
    x = 86,576.43

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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.