Home / 99,801.36-149,603.76-40,678.56

Finding the Fourth Proportional to 99,801.36, 149,603.76 and 40,678.56

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Solution

The fourth proportional to 99,801.36, 149,603.76 and 40,678.56 is: 60,977.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,801.36 : 149,603.76 = 40,678.56 : x
  2. Step 2: Convert to fraction form
    99,801.36/149,603.76 = 40,678.56/x
  3. Step 3: Cross multiply
    99,801.36x = 149,603.76 × 40,678.56
  4. Step 4: Simplify right side
    99,801.36x = 6,085,665,527.39
  5. Step 5: Solve for x
    x = 6,085,665,527.39/99,801.36
  6. Step 6: Final answer
    x = 60,977.78

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1.5x scale

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.