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Finding the Fourth Proportional to 122,865.84, 169,563.72 and 69,156.24

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Solution

The fourth proportional to 122,865.84, 169,563.72 and 69,156.24 is: 95,440.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,865.84 : 169,563.72 = 69,156.24 : x
  2. Step 2: Convert to fraction form
    122,865.84/169,563.72 = 69,156.24/x
  3. Step 3: Cross multiply
    122,865.84x = 169,563.72 × 69,156.24
  4. Step 4: Simplify right side
    122,865.84x = 11,726,389,315.61
  5. Step 5: Solve for x
    x = 11,726,389,315.61/122,865.84
  6. Step 6: Final answer
    x = 95,440.60

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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.