Home / 137,800.56-190,164.88-80,478.96

Finding the Fourth Proportional to 137,800.56, 190,164.88 and 80,478.96

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Solution

The fourth proportional to 137,800.56, 190,164.88 and 80,478.96 is: 111,061.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,800.56 : 190,164.88 = 80,478.96 : x
  2. Step 2: Convert to fraction form
    137,800.56/190,164.88 = 80,478.96/x
  3. Step 3: Cross multiply
    137,800.56x = 190,164.88 × 80,478.96
  4. Step 4: Simplify right side
    137,800.56x = 15,304,271,770.92
  5. Step 5: Solve for x
    x = 15,304,271,770.92/137,800.56
  6. Step 6: Final answer
    x = 111,061.03

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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.