Home / 131,065.28-180,801.12-88,638.08

Finding the Fourth Proportional to 131,065.28, 180,801.12 and 88,638.08

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Solution

The fourth proportional to 131,065.28, 180,801.12 and 88,638.08 is: 122,273.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,065.28 : 180,801.12 = 88,638.08 : x
  2. Step 2: Convert to fraction form
    131,065.28/180,801.12 = 88,638.08/x
  3. Step 3: Cross multiply
    131,065.28x = 180,801.12 × 88,638.08
  4. Step 4: Simplify right side
    131,065.28x = 16,025,864,138.65
  5. Step 5: Solve for x
    x = 16,025,864,138.65/131,065.28
  6. Step 6: Final answer
    x = 122,273.91

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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.