Home / 189,162.08-261,042.32-103,120.80

Finding the Fourth Proportional to 189,162.08, 261,042.32 and 103,120.80

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Solution

The fourth proportional to 189,162.08, 261,042.32 and 103,120.80 is: 142,305.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,162.08 : 261,042.32 = 103,120.80 : x
  2. Step 2: Convert to fraction form
    189,162.08/261,042.32 = 103,120.80/x
  3. Step 3: Cross multiply
    189,162.08x = 261,042.32 × 103,120.80
  4. Step 4: Simplify right side
    189,162.08x = 26,918,892,872.26
  5. Step 5: Solve for x
    x = 26,918,892,872.26/189,162.08
  6. Step 6: Final answer
    x = 142,305.97

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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.