Home / 126,127.65-189,186-31,355.85

Finding the Fourth Proportional to 126,127.65, 189,186 and 31,355.85

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Solution

The fourth proportional to 126,127.65, 189,186 and 31,355.85 is: 47,032.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,127.65 : 189,186 = 31,355.85 : x
  2. Step 2: Convert to fraction form
    126,127.65/189,186 = 31,355.85/x
  3. Step 3: Cross multiply
    126,127.65x = 189,186 × 31,355.85
  4. Step 4: Simplify right side
    126,127.65x = 5,932,087,838.10
  5. Step 5: Solve for x
    x = 5,932,087,838.10/126,127.65
  6. Step 6: Final answer
    x = 47,032.41

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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.