Home / 139,157.03-192,036.78-75,494.81

Finding the Fourth Proportional to 139,157.03, 192,036.78 and 75,494.81

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Solution

The fourth proportional to 139,157.03, 192,036.78 and 75,494.81 is: 104,182.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,157.03 : 192,036.78 = 75,494.81 : x
  2. Step 2: Convert to fraction form
    139,157.03/192,036.78 = 75,494.81/x
  3. Step 3: Cross multiply
    139,157.03x = 192,036.78 × 75,494.81
  4. Step 4: Simplify right side
    139,157.03x = 14,497,780,416.10
  5. Step 5: Solve for x
    x = 14,497,780,416.10/139,157.03
  6. Step 6: Final answer
    x = 104,182.88

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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.