Home / 126,643.86-189,965.75-47,739.63

Finding the Fourth Proportional to 126,643.86, 189,965.75 and 47,739.63

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Solution

The fourth proportional to 126,643.86, 189,965.75 and 47,739.63 is: 71,609.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,643.86 : 189,965.75 = 47,739.63 : x
  2. Step 2: Convert to fraction form
    126,643.86/189,965.75 = 47,739.63/x
  3. Step 3: Cross multiply
    126,643.86x = 189,965.75 × 47,739.63
  4. Step 4: Simplify right side
    126,643.86x = 9,068,894,378.97
  5. Step 5: Solve for x
    x = 9,068,894,378.97/126,643.86
  6. Step 6: Final answer
    x = 71,609.43

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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.