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Finding the Fourth Proportional to 122,833.95, 169,507.94 and 80,391.57

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Solution

The fourth proportional to 122,833.95, 169,507.94 and 80,391.57 is: 110,938.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,833.95 : 169,507.94 = 80,391.57 : x
  2. Step 2: Convert to fraction form
    122,833.95/169,507.94 = 80,391.57/x
  3. Step 3: Cross multiply
    122,833.95x = 169,507.94 × 80,391.57
  4. Step 4: Simplify right side
    122,833.95x = 13,627,009,022.11
  5. Step 5: Solve for x
    x = 13,627,009,022.11/122,833.95
  6. Step 6: Final answer
    x = 110,938.46

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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.