Home / 126,643.40-189,965.06-47,739.17

Finding the Fourth Proportional to 126,643.40, 189,965.06 and 47,739.17

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Solution

The fourth proportional to 126,643.40, 189,965.06 and 47,739.17 is: 71,608.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,643.40 : 189,965.06 = 47,739.17 : x
  2. Step 2: Convert to fraction form
    126,643.40/189,965.06 = 47,739.17/x
  3. Step 3: Cross multiply
    126,643.40x = 189,965.06 × 47,739.17
  4. Step 4: Simplify right side
    126,643.40x = 9,068,775,243.85
  5. Step 5: Solve for x
    x = 9,068,775,243.85/126,643.40
  6. Step 6: Final answer
    x = 71,608.75

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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.