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Finding the Fourth Proportional to 139,347.03, 208,821.29 and 111,352.22

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Solution

The fourth proportional to 139,347.03, 208,821.29 and 111,352.22 is: 166,869.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,347.03 : 208,821.29 = 111,352.22 : x
  2. Step 2: Convert to fraction form
    139,347.03/208,821.29 = 111,352.22/x
  3. Step 3: Cross multiply
    139,347.03x = 208,821.29 × 111,352.22
  4. Step 4: Simplify right side
    139,347.03x = 23,252,712,623.90
  5. Step 5: Solve for x
    x = 23,252,712,623.90/139,347.03
  6. Step 6: Final answer
    x = 166,869.09

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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.