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Finding the Fourth Proportional to 139,836.54, 209,686.14 and 59,863.23

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Solution

The fourth proportional to 139,836.54, 209,686.14 and 59,863.23 is: 89,765.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,836.54 : 209,686.14 = 59,863.23 : x
  2. Step 2: Convert to fraction form
    139,836.54/209,686.14 = 59,863.23/x
  3. Step 3: Cross multiply
    139,836.54x = 209,686.14 × 59,863.23
  4. Step 4: Simplify right side
    139,836.54x = 12,552,489,626.63
  5. Step 5: Solve for x
    x = 12,552,489,626.63/139,836.54
  6. Step 6: Final answer
    x = 89,765.45

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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.