Home / 98,014.05-135,289.85-77,906.61

Finding the Fourth Proportional to 98,014.05, 135,289.85 and 77,906.61

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Solution

The fourth proportional to 98,014.05, 135,289.85 and 77,906.61 is: 107,535.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,014.05 : 135,289.85 = 77,906.61 : x
  2. Step 2: Convert to fraction form
    98,014.05/135,289.85 = 77,906.61/x
  3. Step 3: Cross multiply
    98,014.05x = 135,289.85 × 77,906.61
  4. Step 4: Simplify right side
    98,014.05x = 10,539,973,191.38
  5. Step 5: Solve for x
    x = 10,539,973,191.38/98,014.05
  6. Step 6: Final answer
    x = 107,535.33

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1.5x scale

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.