Home / 131,020.86-180,752.76-85,620.04

Finding the Fourth Proportional to 131,020.86, 180,752.76 and 85,620.04

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Solution

The fourth proportional to 131,020.86, 180,752.76 and 85,620.04 is: 118,119.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,020.86 : 180,752.76 = 85,620.04 : x
  2. Step 2: Convert to fraction form
    131,020.86/180,752.76 = 85,620.04/x
  3. Step 3: Cross multiply
    131,020.86x = 180,752.76 × 85,620.04
  4. Step 4: Simplify right side
    131,020.86x = 15,476,058,541.31
  5. Step 5: Solve for x
    x = 15,476,058,541.31/131,020.86
  6. Step 6: Final answer
    x = 118,119.04

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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.