Home / 99,003.45-148,150.42-85,722.25

Finding the Fourth Proportional to 99,003.45, 148,150.42 and 85,722.25

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Solution

The fourth proportional to 99,003.45, 148,150.42 and 85,722.25 is: 128,276.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,003.45 : 148,150.42 = 85,722.25 : x
  2. Step 2: Convert to fraction form
    99,003.45/148,150.42 = 85,722.25/x
  3. Step 3: Cross multiply
    99,003.45x = 148,150.42 × 85,722.25
  4. Step 4: Simplify right side
    99,003.45x = 12,699,787,033.95
  5. Step 5: Solve for x
    x = 12,699,787,033.95/99,003.45
  6. Step 6: Final answer
    x = 128,276.21

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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.