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Finding the Fourth Proportional to 169,244.47, 253,801.08 and 90,315.64

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Solution

The fourth proportional to 169,244.47, 253,801.08 and 90,315.64 is: 135,438.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,244.47 : 253,801.08 = 90,315.64 : x
  2. Step 2: Convert to fraction form
    169,244.47/253,801.08 = 90,315.64/x
  3. Step 3: Cross multiply
    169,244.47x = 253,801.08 × 90,315.64
  4. Step 4: Simplify right side
    169,244.47x = 22,922,206,972.89
  5. Step 5: Solve for x
    x = 22,922,206,972.89/169,244.47
  6. Step 6: Final answer
    x = 135,438.44

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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.