Home / 189,165.15-261,039.96-103,122.27

Finding the Fourth Proportional to 189,165.15, 261,039.96 and 103,122.27

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Solution

The fourth proportional to 189,165.15, 261,039.96 and 103,122.27 is: 142,304.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,165.15 : 261,039.96 = 103,122.27 : x
  2. Step 2: Convert to fraction form
    189,165.15/261,039.96 = 103,122.27/x
  3. Step 3: Cross multiply
    189,165.15x = 261,039.96 × 103,122.27
  4. Step 4: Simplify right side
    189,165.15x = 26,919,033,235.91
  5. Step 5: Solve for x
    x = 26,919,033,235.91/189,165.15
  6. Step 6: Final answer
    x = 142,304.40

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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.