Home / 139,434.28-192,419.16-75,771.94

Finding the Fourth Proportional to 139,434.28, 192,419.16 and 75,771.94

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Solution

The fourth proportional to 139,434.28, 192,419.16 and 75,771.94 is: 104,565.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,434.28 : 192,419.16 = 75,771.94 : x
  2. Step 2: Convert to fraction form
    139,434.28/192,419.16 = 75,771.94/x
  3. Step 3: Cross multiply
    139,434.28x = 192,419.16 × 75,771.94
  4. Step 4: Simplify right side
    139,434.28x = 14,579,973,046.37
  5. Step 5: Solve for x
    x = 14,579,973,046.37/139,434.28
  6. Step 6: Final answer
    x = 104,565.20

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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.