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Finding the Fourth Proportional to 122,116.56, 168,535.80 and 74,376.84

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Solution

The fourth proportional to 122,116.56, 168,535.80 and 74,376.84 is: 102,649.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,116.56 : 168,535.80 = 74,376.84 : x
  2. Step 2: Convert to fraction form
    122,116.56/168,535.80 = 74,376.84/x
  3. Step 3: Cross multiply
    122,116.56x = 168,535.80 × 74,376.84
  4. Step 4: Simplify right side
    122,116.56x = 12,535,160,230.87
  5. Step 5: Solve for x
    x = 12,535,160,230.87/122,116.56
  6. Step 6: Final answer
    x = 102,649.14

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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.