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Finding the Fourth Proportional to 189,325.43, 261,222.50 and 115,719.23

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Solution

The fourth proportional to 189,325.43, 261,222.50 and 115,719.23 is: 159,664.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,325.43 : 261,222.50 = 115,719.23 : x
  2. Step 2: Convert to fraction form
    189,325.43/261,222.50 = 115,719.23/x
  3. Step 3: Cross multiply
    189,325.43x = 261,222.50 × 115,719.23
  4. Step 4: Simplify right side
    189,325.43x = 30,228,465,980.08
  5. Step 5: Solve for x
    x = 30,228,465,980.08/189,325.43
  6. Step 6: Final answer
    x = 159,664.06

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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.