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Finding the Fourth Proportional to 139,340.19, 208,956.80 and 59,327.43

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Solution

The fourth proportional to 139,340.19, 208,956.80 and 59,327.43 is: 88,968.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,340.19 : 208,956.80 = 59,327.43 : x
  2. Step 2: Convert to fraction form
    139,340.19/208,956.80 = 59,327.43/x
  3. Step 3: Cross multiply
    139,340.19x = 208,956.80 × 59,327.43
  4. Step 4: Simplify right side
    139,340.19x = 12,396,869,478.39
  5. Step 5: Solve for x
    x = 12,396,869,478.39/139,340.19
  6. Step 6: Final answer
    x = 88,968.37

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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.