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Finding the Fourth Proportional to 113,242.16, 169,727.16 and 79,912.28

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Solution

The fourth proportional to 113,242.16, 169,727.16 and 79,912.28 is: 119,772.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,242.16 : 169,727.16 = 79,912.28 : x
  2. Step 2: Convert to fraction form
    113,242.16/169,727.16 = 79,912.28/x
  3. Step 3: Cross multiply
    113,242.16x = 169,727.16 × 79,912.28
  4. Step 4: Simplify right side
    113,242.16x = 13,563,284,333.52
  5. Step 5: Solve for x
    x = 13,563,284,333.52/113,242.16
  6. Step 6: Final answer
    x = 119,772.39

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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.