Home / 126,335.78-189,403.07-72,967.04

Finding the Fourth Proportional to 126,335.78, 189,403.07 and 72,967.04

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Solution

The fourth proportional to 126,335.78, 189,403.07 and 72,967.04 is: 109,392.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,335.78 : 189,403.07 = 72,967.04 : x
  2. Step 2: Convert to fraction form
    126,335.78/189,403.07 = 72,967.04/x
  3. Step 3: Cross multiply
    126,335.78x = 189,403.07 × 72,967.04
  4. Step 4: Simplify right side
    126,335.78x = 13,820,180,072.96
  5. Step 5: Solve for x
    x = 13,820,180,072.96/126,335.78
  6. Step 6: Final answer
    x = 109,392.45

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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.