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Finding the Fourth Proportional to 169,551.68, 254,144.16 and 74,697.28

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Solution

The fourth proportional to 169,551.68, 254,144.16 and 74,697.28 is: 111,965.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,551.68 : 254,144.16 = 74,697.28 : x
  2. Step 2: Convert to fraction form
    169,551.68/254,144.16 = 74,697.28/x
  3. Step 3: Cross multiply
    169,551.68x = 254,144.16 × 74,697.28
  4. Step 4: Simplify right side
    169,551.68x = 18,983,877,479.88
  5. Step 5: Solve for x
    x = 18,983,877,479.88/169,551.68
  6. Step 6: Final answer
    x = 111,965.14

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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.