Home / 103,620.12-155,430.20-28,740.27

Finding the Fourth Proportional to 103,620.12, 155,430.20 and 28,740.27

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Solution

The fourth proportional to 103,620.12, 155,430.20 and 28,740.27 is: 43,110.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,620.12 : 155,430.20 = 28,740.27 : x
  2. Step 2: Convert to fraction form
    103,620.12/155,430.20 = 28,740.27/x
  3. Step 3: Cross multiply
    103,620.12x = 155,430.20 × 28,740.27
  4. Step 4: Simplify right side
    103,620.12x = 4,467,105,770.45
  5. Step 5: Solve for x
    x = 4,467,105,770.45/103,620.12
  6. Step 6: Final answer
    x = 43,110.41

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1.5x scale

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.