Home / 139,487.20-192,488.16-75,823.36

Finding the Fourth Proportional to 139,487.20, 192,488.16 and 75,823.36

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Solution

The fourth proportional to 139,487.20, 192,488.16 and 75,823.36 is: 104,633.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,487.20 : 192,488.16 = 75,823.36 : x
  2. Step 2: Convert to fraction form
    139,487.20/192,488.16 = 75,823.36/x
  3. Step 3: Cross multiply
    139,487.20x = 192,488.16 × 75,823.36
  4. Step 4: Simplify right side
    139,487.20x = 14,595,099,051.42
  5. Step 5: Solve for x
    x = 14,595,099,051.42/139,487.20
  6. Step 6: Final answer
    x = 104,633.97

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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.