Home / 139,138.08-192,009.06-75,475.32

Finding the Fourth Proportional to 139,138.08, 192,009.06 and 75,475.32

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Solution

The fourth proportional to 139,138.08, 192,009.06 and 75,475.32 is: 104,155.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,138.08 : 192,009.06 = 75,475.32 : x
  2. Step 2: Convert to fraction form
    139,138.08/192,009.06 = 75,475.32/x
  3. Step 3: Cross multiply
    139,138.08x = 192,009.06 × 75,475.32
  4. Step 4: Simplify right side
    139,138.08x = 14,491,945,246.40
  5. Step 5: Solve for x
    x = 14,491,945,246.40/139,138.08
  6. Step 6: Final answer
    x = 104,155.13

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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.