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Finding the Fourth Proportional to 169,184.25, 253,734.80 and 74,438.21

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Solution

The fourth proportional to 169,184.25, 253,734.80 and 74,438.21 is: 111,639.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,184.25 : 253,734.80 = 74,438.21 : x
  2. Step 2: Convert to fraction form
    169,184.25/253,734.80 = 74,438.21/x
  3. Step 3: Cross multiply
    169,184.25x = 253,734.80 × 74,438.21
  4. Step 4: Simplify right side
    169,184.25x = 18,887,564,588.85
  5. Step 5: Solve for x
    x = 18,887,564,588.85/169,184.25
  6. Step 6: Final answer
    x = 111,639.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.