Home / 99,688.20-149,532.30-57,697.80

Finding the Fourth Proportional to 99,688.20, 149,532.30 and 57,697.80

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Solution

The fourth proportional to 99,688.20, 149,532.30 and 57,697.80 is: 86,546.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,688.20 : 149,532.30 = 57,697.80 : x
  2. Step 2: Convert to fraction form
    99,688.20/149,532.30 = 57,697.80/x
  3. Step 3: Cross multiply
    99,688.20x = 149,532.30 × 57,697.80
  4. Step 4: Simplify right side
    99,688.20x = 8,627,684,738.94
  5. Step 5: Solve for x
    x = 8,627,684,738.94/99,688.20
  6. Step 6: Final answer
    x = 86,546.70

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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.