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Finding the Fourth Proportional to 113,233.70, 169,980.15 and 66,512.90

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Solution

The fourth proportional to 113,233.70, 169,980.15 and 66,512.90 is: 99,845.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,233.70 : 169,980.15 = 66,512.90 : x
  2. Step 2: Convert to fraction form
    113,233.70/169,980.15 = 66,512.90/x
  3. Step 3: Cross multiply
    113,233.70x = 169,980.15 × 66,512.90
  4. Step 4: Simplify right side
    113,233.70x = 11,305,872,718.94
  5. Step 5: Solve for x
    x = 11,305,872,718.94/113,233.70
  6. Step 6: Final answer
    x = 99,845.48

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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.