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Finding the Fourth Proportional to 122,682.89, 169,254.42 and 68,955.59

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Solution

The fourth proportional to 122,682.89, 169,254.42 and 68,955.59 is: 95,131.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,682.89 : 169,254.42 = 68,955.59 : x
  2. Step 2: Convert to fraction form
    122,682.89/169,254.42 = 68,955.59/x
  3. Step 3: Cross multiply
    122,682.89x = 169,254.42 × 68,955.59
  4. Step 4: Simplify right side
    122,682.89x = 11,671,038,391.21
  5. Step 5: Solve for x
    x = 11,671,038,391.21/122,682.89
  6. Step 6: Final answer
    x = 95,131.75

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1.5x scale

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.