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Finding the Fourth Proportional to 159,381.64, 219,927.51 and 91,395.10

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Solution

The fourth proportional to 159,381.64, 219,927.51 and 91,395.10 is: 126,114.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,381.64 : 219,927.51 = 91,395.10 : x
  2. Step 2: Convert to fraction form
    159,381.64/219,927.51 = 91,395.10/x
  3. Step 3: Cross multiply
    159,381.64x = 219,927.51 × 91,395.10
  4. Step 4: Simplify right side
    159,381.64x = 20,100,296,769.20
  5. Step 5: Solve for x
    x = 20,100,296,769.20/159,381.64
  6. Step 6: Final answer
    x = 126,114.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.