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Finding the Fourth Proportional to 139,489.11, 209,228.13 and 59,494.05

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Solution

The fourth proportional to 139,489.11, 209,228.13 and 59,494.05 is: 89,238.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,489.11 : 209,228.13 = 59,494.05 : x
  2. Step 2: Convert to fraction form
    139,489.11/209,228.13 = 59,494.05/x
  3. Step 3: Cross multiply
    139,489.11x = 209,228.13 × 59,494.05
  4. Step 4: Simplify right side
    139,489.11x = 12,447,828,827.63
  5. Step 5: Solve for x
    x = 12,447,828,827.63/139,489.11
  6. Step 6: Final answer
    x = 89,238.71

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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.