Home / 135,440.79-186,910.25-78,079.04

Finding the Fourth Proportional to 135,440.79, 186,910.25 and 78,079.04

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Solution

The fourth proportional to 135,440.79, 186,910.25 and 78,079.04 is: 107,750.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,440.79 : 186,910.25 = 78,079.04 : x
  2. Step 2: Convert to fraction form
    135,440.79/186,910.25 = 78,079.04/x
  3. Step 3: Cross multiply
    135,440.79x = 186,910.25 × 78,079.04
  4. Step 4: Simplify right side
    135,440.79x = 14,593,772,262.13
  5. Step 5: Solve for x
    x = 14,593,772,262.13/135,440.79
  6. Step 6: Final answer
    x = 107,750.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.