Home / 126,035.31-189,108.57-66,856.47

Finding the Fourth Proportional to 126,035.31, 189,108.57 and 66,856.47

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Solution

The fourth proportional to 126,035.31, 189,108.57 and 66,856.47 is: 100,314.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,035.31 : 189,108.57 = 66,856.47 : x
  2. Step 2: Convert to fraction form
    126,035.31/189,108.57 = 66,856.47/x
  3. Step 3: Cross multiply
    126,035.31x = 189,108.57 × 66,856.47
  4. Step 4: Simplify right side
    126,035.31x = 12,643,131,436.95
  5. Step 5: Solve for x
    x = 12,643,131,436.95/126,035.31
  6. Step 6: Final answer
    x = 100,314.20

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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.