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Finding the Fourth Proportional to 139,393.32, 209,065.31 and 63,474.45

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Solution

The fourth proportional to 139,393.32, 209,065.31 and 63,474.45 is: 95,200.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,393.32 : 209,065.31 = 63,474.45 : x
  2. Step 2: Convert to fraction form
    139,393.32/209,065.31 = 63,474.45/x
  3. Step 3: Cross multiply
    139,393.32x = 209,065.31 × 63,474.45
  4. Step 4: Simplify right side
    139,393.32x = 13,270,305,248.96
  5. Step 5: Solve for x
    x = 13,270,305,248.96/139,393.32
  6. Step 6: Final answer
    x = 95,200.44

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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.