Home / 139,867.20-193,017.60-83,280.96

Finding the Fourth Proportional to 139,867.20, 193,017.60 and 83,280.96

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Solution

The fourth proportional to 139,867.20, 193,017.60 and 83,280.96 is: 114,928.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,867.20 : 193,017.60 = 83,280.96 : x
  2. Step 2: Convert to fraction form
    139,867.20/193,017.60 = 83,280.96/x
  3. Step 3: Cross multiply
    139,867.20x = 193,017.60 × 83,280.96
  4. Step 4: Simplify right side
    139,867.20x = 16,074,691,024.90
  5. Step 5: Solve for x
    x = 16,074,691,024.90/139,867.20
  6. Step 6: Final answer
    x = 114,928.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.