Home / 139,631.22-192,691.89-75,969.45

Finding the Fourth Proportional to 139,631.22, 192,691.89 and 75,969.45

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Solution

The fourth proportional to 139,631.22, 192,691.89 and 75,969.45 is: 104,838.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,631.22 : 192,691.89 = 75,969.45 : x
  2. Step 2: Convert to fraction form
    139,631.22/192,691.89 = 75,969.45/x
  3. Step 3: Cross multiply
    139,631.22x = 192,691.89 × 75,969.45
  4. Step 4: Simplify right side
    139,631.22x = 14,638,696,902.76
  5. Step 5: Solve for x
    x = 14,638,696,902.76/139,631.22
  6. Step 6: Final answer
    x = 104,838.28

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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.