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Finding the Fourth Proportional to 127,551.30, 191,318.85 and 43,311.30

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Solution

The fourth proportional to 127,551.30, 191,318.85 and 43,311.30 is: 64,964.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,551.30 : 191,318.85 = 43,311.30 : x
  2. Step 2: Convert to fraction form
    127,551.30/191,318.85 = 43,311.30/x
  3. Step 3: Cross multiply
    127,551.30x = 191,318.85 × 43,311.30
  4. Step 4: Simplify right side
    127,551.30x = 8,286,268,108.01
  5. Step 5: Solve for x
    x = 8,286,268,108.01/127,551.30
  6. Step 6: Final answer
    x = 64,964.20

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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.