Home / 126,288.47-189,332.11-72,919.93

Finding the Fourth Proportional to 126,288.47, 189,332.11 and 72,919.93

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Solution

The fourth proportional to 126,288.47, 189,332.11 and 72,919.93 is: 109,321.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,288.47 : 189,332.11 = 72,919.93 : x
  2. Step 2: Convert to fraction form
    126,288.47/189,332.11 = 72,919.93/x
  3. Step 3: Cross multiply
    126,288.47x = 189,332.11 × 72,919.93
  4. Step 4: Simplify right side
    126,288.47x = 13,806,084,207.95
  5. Step 5: Solve for x
    x = 13,806,084,207.95/126,288.47
  6. Step 6: Final answer
    x = 109,321.81

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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.