Home / 139,434.45-192,419.57-75,772.09

Finding the Fourth Proportional to 139,434.45, 192,419.57 and 75,772.09

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Solution

The fourth proportional to 139,434.45, 192,419.57 and 75,772.09 is: 104,565.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,434.45 : 192,419.57 = 75,772.09 : x
  2. Step 2: Convert to fraction form
    139,434.45/192,419.57 = 75,772.09/x
  3. Step 3: Cross multiply
    139,434.45x = 192,419.57 × 75,772.09
  4. Step 4: Simplify right side
    139,434.45x = 14,580,032,975.80
  5. Step 5: Solve for x
    x = 14,580,032,975.80/139,434.45
  6. Step 6: Final answer
    x = 104,565.50

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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.