Home / 126,355.80-189,470.30-42,086.34

Finding the Fourth Proportional to 126,355.80, 189,470.30 and 42,086.34

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Solution

The fourth proportional to 126,355.80, 189,470.30 and 42,086.34 is: 63,108.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,355.80 : 189,470.30 = 42,086.34 : x
  2. Step 2: Convert to fraction form
    126,355.80/189,470.30 = 42,086.34/x
  3. Step 3: Cross multiply
    126,355.80x = 189,470.30 × 42,086.34
  4. Step 4: Simplify right side
    126,355.80x = 7,974,111,465.70
  5. Step 5: Solve for x
    x = 7,974,111,465.70/126,355.80
  6. Step 6: Final answer
    x = 63,108.39

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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.