Home / 120,557.16-180,843.24-31,810.76

Finding the Fourth Proportional to 120,557.16, 180,843.24 and 31,810.76

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Solution

The fourth proportional to 120,557.16, 180,843.24 and 31,810.76 is: 47,718.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,557.16 : 180,843.24 = 31,810.76 : x
  2. Step 2: Convert to fraction form
    120,557.16/180,843.24 = 31,810.76/x
  3. Step 3: Cross multiply
    120,557.16x = 180,843.24 × 31,810.76
  4. Step 4: Simplify right side
    120,557.16x = 5,752,760,001.05
  5. Step 5: Solve for x
    x = 5,752,760,001.05/120,557.16
  6. Step 6: Final answer
    x = 47,718.11

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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.