Home / 126,628.08-189,985.47-47,764.86

Finding the Fourth Proportional to 126,628.08, 189,985.47 and 47,764.86

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Solution

The fourth proportional to 126,628.08, 189,985.47 and 47,764.86 is: 71,663.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,628.08 : 189,985.47 = 47,764.86 : x
  2. Step 2: Convert to fraction form
    126,628.08/189,985.47 = 47,764.86/x
  3. Step 3: Cross multiply
    126,628.08x = 189,985.47 × 47,764.86
  4. Step 4: Simplify right side
    126,628.08x = 9,074,629,376.58
  5. Step 5: Solve for x
    x = 9,074,629,376.58/126,628.08
  6. Step 6: Final answer
    x = 71,663.64

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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.