Home / 189,110.30-260,972.28-103,069.31

Finding the Fourth Proportional to 189,110.30, 260,972.28 and 103,069.31

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Solution

The fourth proportional to 189,110.30, 260,972.28 and 103,069.31 is: 142,235.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,110.30 : 260,972.28 = 103,069.31 : x
  2. Step 2: Convert to fraction form
    189,110.30/260,972.28 = 103,069.31/x
  3. Step 3: Cross multiply
    189,110.30x = 260,972.28 × 103,069.31
  4. Step 4: Simplify right side
    189,110.30x = 26,898,231,523.87
  5. Step 5: Solve for x
    x = 26,898,231,523.87/189,110.30
  6. Step 6: Final answer
    x = 142,235.68

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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.