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Finding the Fourth Proportional to 139,511.70, 192,523.71 and 75,848.94

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Solution

The fourth proportional to 139,511.70, 192,523.71 and 75,848.94 is: 104,670.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,511.70 : 192,523.71 = 75,848.94 : x
  2. Step 2: Convert to fraction form
    139,511.70/192,523.71 = 75,848.94/x
  3. Step 3: Cross multiply
    139,511.70x = 192,523.71 × 75,848.94
  4. Step 4: Simplify right side
    139,511.70x = 14,602,719,328.37
  5. Step 5: Solve for x
    x = 14,602,719,328.37/139,511.70
  6. Step 6: Final answer
    x = 104,670.21

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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.