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Finding the Fourth Proportional to 139,155.84, 192,034.56 and 75,492.48

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Solution

The fourth proportional to 139,155.84, 192,034.56 and 75,492.48 is: 104,179.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,155.84 : 192,034.56 = 75,492.48 : x
  2. Step 2: Convert to fraction form
    139,155.84/192,034.56 = 75,492.48/x
  3. Step 3: Cross multiply
    139,155.84x = 192,034.56 × 75,492.48
  4. Step 4: Simplify right side
    139,155.84x = 14,497,165,180.11
  5. Step 5: Solve for x
    x = 14,497,165,180.11/139,155.84
  6. Step 6: Final answer
    x = 104,179.35

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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.