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Finding the Fourth Proportional to 139,703.13, 209,562.93 and 43,627.28

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Solution

The fourth proportional to 139,703.13, 209,562.93 and 43,627.28 is: 65,443.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,703.13 : 209,562.93 = 43,627.28 : x
  2. Step 2: Convert to fraction form
    139,703.13/209,562.93 = 43,627.28/x
  3. Step 3: Cross multiply
    139,703.13x = 209,562.93 × 43,627.28
  4. Step 4: Simplify right side
    139,703.13x = 9,142,659,576.92
  5. Step 5: Solve for x
    x = 9,142,659,576.92/139,703.13
  6. Step 6: Final answer
    x = 65,443.48

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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.