Home / 99,769.20-149,653.80-91,604.40

Finding the Fourth Proportional to 99,769.20, 149,653.80 and 91,604.40

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Solution

The fourth proportional to 99,769.20, 149,653.80 and 91,604.40 is: 137,406.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,769.20 : 149,653.80 = 91,604.40 : x
  2. Step 2: Convert to fraction form
    99,769.20/149,653.80 = 91,604.40/x
  3. Step 3: Cross multiply
    99,769.20x = 149,653.80 × 91,604.40
  4. Step 4: Simplify right side
    99,769.20x = 13,708,946,556.72
  5. Step 5: Solve for x
    x = 13,708,946,556.72/99,769.20
  6. Step 6: Final answer
    x = 137,406.60

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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.