Home / 137,619.38-206,412.60-42,856.40

Finding the Fourth Proportional to 137,619.38, 206,412.60 and 42,856.40

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Solution

The fourth proportional to 137,619.38, 206,412.60 and 42,856.40 is: 64,279.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,619.38 : 206,412.60 = 42,856.40 : x
  2. Step 2: Convert to fraction form
    137,619.38/206,412.60 = 42,856.40/x
  3. Step 3: Cross multiply
    137,619.38x = 206,412.60 × 42,856.40
  4. Step 4: Simplify right side
    137,619.38x = 8,846,100,950.64
  5. Step 5: Solve for x
    x = 8,846,100,950.64/137,619.38
  6. Step 6: Final answer
    x = 64,279.47

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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.