Home / 189,422.30-261,394.52-103,379.06

Finding the Fourth Proportional to 189,422.30, 261,394.52 and 103,379.06

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Solution

The fourth proportional to 189,422.30, 261,394.52 and 103,379.06 is: 142,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,422.30 : 261,394.52 = 103,379.06 : x
  2. Step 2: Convert to fraction form
    189,422.30/261,394.52 = 103,379.06/x
  3. Step 3: Cross multiply
    189,422.30x = 261,394.52 × 103,379.06
  4. Step 4: Simplify right side
    189,422.30x = 27,022,719,766.75
  5. Step 5: Solve for x
    x = 27,022,719,766.75/189,422.30
  6. Step 6: Final answer
    x = 142,658.60

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1.5x scale

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.