Home / 137,126.05-189,234.36-76,697.75

Finding the Fourth Proportional to 137,126.05, 189,234.36 and 76,697.75

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Solution

The fourth proportional to 137,126.05, 189,234.36 and 76,697.75 is: 105,843.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,126.05 : 189,234.36 = 76,697.75 : x
  2. Step 2: Convert to fraction form
    137,126.05/189,234.36 = 76,697.75/x
  3. Step 3: Cross multiply
    137,126.05x = 189,234.36 × 76,697.75
  4. Step 4: Simplify right side
    137,126.05x = 14,513,850,107.78
  5. Step 5: Solve for x
    x = 14,513,850,107.78/137,126.05
  6. Step 6: Final answer
    x = 105,843.13

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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.