Home / 140,868.81-194,390.15-77,202.09

Finding the Fourth Proportional to 140,868.81, 194,390.15 and 77,202.09

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Solution

The fourth proportional to 140,868.81, 194,390.15 and 77,202.09 is: 106,534.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,868.81 : 194,390.15 = 77,202.09 : x
  2. Step 2: Convert to fraction form
    140,868.81/194,390.15 = 77,202.09/x
  3. Step 3: Cross multiply
    140,868.81x = 194,390.15 × 77,202.09
  4. Step 4: Simplify right side
    140,868.81x = 15,007,325,469.40
  5. Step 5: Solve for x
    x = 15,007,325,469.40/140,868.81
  6. Step 6: Final answer
    x = 106,534.05

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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.