Home / 103,432.11-155,145.07-28,556.82

Finding the Fourth Proportional to 103,432.11, 155,145.07 and 28,556.82

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Solution

The fourth proportional to 103,432.11, 155,145.07 and 28,556.82 is: 42,834.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,432.11 : 155,145.07 = 28,556.82 : x
  2. Step 2: Convert to fraction form
    103,432.11/155,145.07 = 28,556.82/x
  3. Step 3: Cross multiply
    103,432.11x = 155,145.07 × 28,556.82
  4. Step 4: Simplify right side
    103,432.11x = 4,430,449,873.57
  5. Step 5: Solve for x
    x = 4,430,449,873.57/103,432.11
  6. Step 6: Final answer
    x = 42,834.38

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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.