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Finding the Fourth Proportional to 139,683.44, 208,937.92 and 117,753.28

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Solution

The fourth proportional to 139,683.44, 208,937.92 and 117,753.28 is: 176,134.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,683.44 : 208,937.92 = 117,753.28 : x
  2. Step 2: Convert to fraction form
    139,683.44/208,937.92 = 117,753.28/x
  3. Step 3: Cross multiply
    139,683.44x = 208,937.92 × 117,753.28
  4. Step 4: Simplify right side
    139,683.44x = 24,603,125,396.38
  5. Step 5: Solve for x
    x = 24,603,125,396.38/139,683.44
  6. Step 6: Final answer
    x = 176,134.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.