Home / 126,066.20-188,840.10-86,667.80

Finding the Fourth Proportional to 126,066.20, 188,840.10 and 86,667.80

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Solution

The fourth proportional to 126,066.20, 188,840.10 and 86,667.80 is: 129,823.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,066.20 : 188,840.10 = 86,667.80 : x
  2. Step 2: Convert to fraction form
    126,066.20/188,840.10 = 86,667.80/x
  3. Step 3: Cross multiply
    126,066.20x = 188,840.10 × 86,667.80
  4. Step 4: Simplify right side
    126,066.20x = 16,366,356,018.78
  5. Step 5: Solve for x
    x = 16,366,356,018.78/126,066.20
  6. Step 6: Final answer
    x = 129,823.51

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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.