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Finding the Fourth Proportional to 169,071.28, 253,656.32 and 75,555.16

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Solution

The fourth proportional to 169,071.28, 253,656.32 and 75,555.16 is: 113,354.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,071.28 : 253,656.32 = 75,555.16 : x
  2. Step 2: Convert to fraction form
    169,071.28/253,656.32 = 75,555.16/x
  3. Step 3: Cross multiply
    169,071.28x = 253,656.32 × 75,555.16
  4. Step 4: Simplify right side
    169,071.28x = 19,165,042,830.69
  5. Step 5: Solve for x
    x = 19,165,042,830.69/169,071.28
  6. Step 6: Final answer
    x = 113,354.81

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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.