Home / 99,527.41-149,440.86-85,638.75

Finding the Fourth Proportional to 99,527.41, 149,440.86 and 85,638.75

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Solution

The fourth proportional to 99,527.41, 149,440.86 and 85,638.75 is: 128,586.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,527.41 : 149,440.86 = 85,638.75 : x
  2. Step 2: Convert to fraction form
    99,527.41/149,440.86 = 85,638.75/x
  3. Step 3: Cross multiply
    99,527.41x = 149,440.86 × 85,638.75
  4. Step 4: Simplify right side
    99,527.41x = 12,797,928,449.33
  5. Step 5: Solve for x
    x = 12,797,928,449.33/99,527.41
  6. Step 6: Final answer
    x = 128,586.97

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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.