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Finding the Fourth Proportional to 169,141.76, 253,736.34 and 69,316.16

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Solution

The fourth proportional to 169,141.76, 253,736.34 and 69,316.16 is: 103,983.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,141.76 : 253,736.34 = 69,316.16 : x
  2. Step 2: Convert to fraction form
    169,141.76/253,736.34 = 69,316.16/x
  3. Step 3: Cross multiply
    169,141.76x = 253,736.34 × 69,316.16
  4. Step 4: Simplify right side
    169,141.76x = 17,588,028,741.25
  5. Step 5: Solve for x
    x = 17,588,028,741.25/169,141.76
  6. Step 6: Final answer
    x = 103,983.95

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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.