Home / 126,434.12-189,678.51-67,261.19

Finding the Fourth Proportional to 126,434.12, 189,678.51 and 67,261.19

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Solution

The fourth proportional to 126,434.12, 189,678.51 and 67,261.19 is: 100,906.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,434.12 : 189,678.51 = 67,261.19 : x
  2. Step 2: Convert to fraction form
    126,434.12/189,678.51 = 67,261.19/x
  3. Step 3: Cross multiply
    126,434.12x = 189,678.51 × 67,261.19
  4. Step 4: Simplify right side
    126,434.12x = 12,758,001,351.63
  5. Step 5: Solve for x
    x = 12,758,001,351.63/126,434.12
  6. Step 6: Final answer
    x = 100,906.32

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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.