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Finding the Fourth Proportional to 139,808.03, 209,524.93 and 50,977.76

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Solution

The fourth proportional to 139,808.03, 209,524.93 and 50,977.76 is: 76,398.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,808.03 : 209,524.93 = 50,977.76 : x
  2. Step 2: Convert to fraction form
    139,808.03/209,524.93 = 50,977.76/x
  3. Step 3: Cross multiply
    139,808.03x = 209,524.93 × 50,977.76
  4. Step 4: Simplify right side
    139,808.03x = 10,681,110,420.49
  5. Step 5: Solve for x
    x = 10,681,110,420.49/139,808.03
  6. Step 6: Final answer
    x = 76,398.41

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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.