Home / 85,844.20-128,474.70-75,346.60

Finding the Fourth Proportional to 85,844.20, 128,474.70 and 75,346.60

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Solution

The fourth proportional to 85,844.20, 128,474.70 and 75,346.60 is: 112,763.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,844.20 : 128,474.70 = 75,346.60 : x
  2. Step 2: Convert to fraction form
    85,844.20/128,474.70 = 75,346.60/x
  3. Step 3: Cross multiply
    85,844.20x = 128,474.70 × 75,346.60
  4. Step 4: Simplify right side
    85,844.20x = 9,680,131,831.02
  5. Step 5: Solve for x
    x = 9,680,131,831.02/85,844.20
  6. Step 6: Final answer
    x = 112,763.96

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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.