Home / 139,290.93-192,225.42-81,934.43

Finding the Fourth Proportional to 139,290.93, 192,225.42 and 81,934.43

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Solution

The fourth proportional to 139,290.93, 192,225.42 and 81,934.43 is: 113,071.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,290.93 : 192,225.42 = 81,934.43 : x
  2. Step 2: Convert to fraction form
    139,290.93/192,225.42 = 81,934.43/x
  3. Step 3: Cross multiply
    139,290.93x = 192,225.42 × 81,934.43
  4. Step 4: Simplify right side
    139,290.93x = 15,749,879,258.08
  5. Step 5: Solve for x
    x = 15,749,879,258.08/139,290.93
  6. Step 6: Final answer
    x = 113,071.82

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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.