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Finding the Fourth Proportional to 139,235.56, 208,853.34 and 34,053.28

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Solution

The fourth proportional to 139,235.56, 208,853.34 and 34,053.28 is: 51,079.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,235.56 : 208,853.34 = 34,053.28 : x
  2. Step 2: Convert to fraction form
    139,235.56/208,853.34 = 34,053.28/x
  3. Step 3: Cross multiply
    139,235.56x = 208,853.34 × 34,053.28
  4. Step 4: Simplify right side
    139,235.56x = 7,112,141,265.96
  5. Step 5: Solve for x
    x = 7,112,141,265.96/139,235.56
  6. Step 6: Final answer
    x = 51,079.92

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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.