Home / 136,680.20-205,052.70-70,130.60

Finding the Fourth Proportional to 136,680.20, 205,052.70 and 70,130.60

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Solution

The fourth proportional to 136,680.20, 205,052.70 and 70,130.60 is: 105,212.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,680.20 : 205,052.70 = 70,130.60 : x
  2. Step 2: Convert to fraction form
    136,680.20/205,052.70 = 70,130.60/x
  3. Step 3: Cross multiply
    136,680.20x = 205,052.70 × 70,130.60
  4. Step 4: Simplify right side
    136,680.20x = 14,380,468,882.62
  5. Step 5: Solve for x
    x = 14,380,468,882.62/136,680.20
  6. Step 6: Final answer
    x = 105,212.52

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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.