Home / 189,414.10-261,392.96-103,373.76

Finding the Fourth Proportional to 189,414.10, 261,392.96 and 103,373.76

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Solution

The fourth proportional to 189,414.10, 261,392.96 and 103,373.76 is: 142,656.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,414.10 : 261,392.96 = 103,373.76 : x
  2. Step 2: Convert to fraction form
    189,414.10/261,392.96 = 103,373.76/x
  3. Step 3: Cross multiply
    189,414.10x = 261,392.96 × 103,373.76
  4. Step 4: Simplify right side
    189,414.10x = 27,021,173,112.73
  5. Step 5: Solve for x
    x = 27,021,173,112.73/189,414.10
  6. Step 6: Final answer
    x = 142,656.61

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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.