Home / 131,881.10-198,003.90-84,787.70

Finding the Fourth Proportional to 131,881.10, 198,003.90 and 84,787.70

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Solution

The fourth proportional to 131,881.10, 198,003.90 and 84,787.70 is: 127,298.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,881.10 : 198,003.90 = 84,787.70 : x
  2. Step 2: Convert to fraction form
    131,881.10/198,003.90 = 84,787.70/x
  3. Step 3: Cross multiply
    131,881.10x = 198,003.90 × 84,787.70
  4. Step 4: Simplify right side
    131,881.10x = 16,788,295,272.03
  5. Step 5: Solve for x
    x = 16,788,295,272.03/131,881.10
  6. Step 6: Final answer
    x = 127,298.72

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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.