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Finding the Fourth Proportional to 139,737.30, 209,587.05 and 55,559.40

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Solution

The fourth proportional to 139,737.30, 209,587.05 and 55,559.40 is: 83,331.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,737.30 : 209,587.05 = 55,559.40 : x
  2. Step 2: Convert to fraction form
    139,737.30/209,587.05 = 55,559.40/x
  3. Step 3: Cross multiply
    139,737.30x = 209,587.05 × 55,559.40
  4. Step 4: Simplify right side
    139,737.30x = 11,644,530,745.77
  5. Step 5: Solve for x
    x = 11,644,530,745.77/139,737.30
  6. Step 6: Final answer
    x = 83,331.59

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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.