Home / 103,432.06-155,145-28,556.78

Finding the Fourth Proportional to 103,432.06, 155,145 and 28,556.78

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Solution

The fourth proportional to 103,432.06, 155,145 and 28,556.78 is: 42,834.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,432.06 : 155,145 = 28,556.78 : x
  2. Step 2: Convert to fraction form
    103,432.06/155,145 = 28,556.78/x
  3. Step 3: Cross multiply
    103,432.06x = 155,145 × 28,556.78
  4. Step 4: Simplify right side
    103,432.06x = 4,430,441,633.10
  5. Step 5: Solve for x
    x = 4,430,441,633.10/103,432.06
  6. Step 6: Final answer
    x = 42,834.32

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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.