Home / 131,061.89-180,821.90-106,821.22

Finding the Fourth Proportional to 131,061.89, 180,821.90 and 106,821.22

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Solution

The fourth proportional to 131,061.89, 180,821.90 and 106,821.22 is: 147,377.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,061.89 : 180,821.90 = 106,821.22 : x
  2. Step 2: Convert to fraction form
    131,061.89/180,821.90 = 106,821.22/x
  3. Step 3: Cross multiply
    131,061.89x = 180,821.90 × 106,821.22
  4. Step 4: Simplify right side
    131,061.89x = 19,315,615,960.72
  5. Step 5: Solve for x
    x = 19,315,615,960.72/131,061.89
  6. Step 6: Final answer
    x = 147,377.82

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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.