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Finding the Fourth Proportional to 139,053.29, 208,580.28 and 39,214.01

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Solution

The fourth proportional to 139,053.29, 208,580.28 and 39,214.01 is: 58,821.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,053.29 : 208,580.28 = 39,214.01 : x
  2. Step 2: Convert to fraction form
    139,053.29/208,580.28 = 39,214.01/x
  3. Step 3: Cross multiply
    139,053.29x = 208,580.28 × 39,214.01
  4. Step 4: Simplify right side
    139,053.29x = 8,179,269,185.72
  5. Step 5: Solve for x
    x = 8,179,269,185.72/139,053.29
  6. Step 6: Final answer
    x = 58,821.11

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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.