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Finding the Fourth Proportional to 122,955.57, 169,641.95 and 75,158.69

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Solution

The fourth proportional to 122,955.57, 169,641.95 and 75,158.69 is: 103,696.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,955.57 : 169,641.95 = 75,158.69 : x
  2. Step 2: Convert to fraction form
    122,955.57/169,641.95 = 75,158.69/x
  3. Step 3: Cross multiply
    122,955.57x = 169,641.95 × 75,158.69
  4. Step 4: Simplify right side
    122,955.57x = 12,750,065,507.04
  5. Step 5: Solve for x
    x = 12,750,065,507.04/122,955.57
  6. Step 6: Final answer
    x = 103,696.53

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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.