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Finding the Fourth Proportional to 139,023.20, 191,853 and 75,362

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Solution

The fourth proportional to 139,023.20, 191,853 and 75,362 is: 104,000.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,023.20 : 191,853 = 75,362 : x
  2. Step 2: Convert to fraction form
    139,023.20/191,853 = 75,362/x
  3. Step 3: Cross multiply
    139,023.20x = 191,853 × 75,362
  4. Step 4: Simplify right side
    139,023.20x = 14,458,425,786
  5. Step 5: Solve for x
    x = 14,458,425,786/139,023.20
  6. Step 6: Final answer
    x = 104,000.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.