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Finding the Fourth Proportional to 139,167.18, 208,764.44 and 39,328.13

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Solution

The fourth proportional to 139,167.18, 208,764.44 and 39,328.13 is: 58,996.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,167.18 : 208,764.44 = 39,328.13 : x
  2. Step 2: Convert to fraction form
    139,167.18/208,764.44 = 39,328.13/x
  3. Step 3: Cross multiply
    139,167.18x = 208,764.44 × 39,328.13
  4. Step 4: Simplify right side
    139,167.18x = 8,210,315,508.45
  5. Step 5: Solve for x
    x = 8,210,315,508.45/139,167.18
  6. Step 6: Final answer
    x = 58,996.06

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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.