Home / 103,625.85-155,669.18-100,861.05

Finding the Fourth Proportional to 103,625.85, 155,669.18 and 100,861.05

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Solution

The fourth proportional to 103,625.85, 155,669.18 and 100,861.05 is: 151,515.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,625.85 : 155,669.18 = 100,861.05 : x
  2. Step 2: Convert to fraction form
    103,625.85/155,669.18 = 100,861.05/x
  3. Step 3: Cross multiply
    103,625.85x = 155,669.18 × 100,861.05
  4. Step 4: Simplify right side
    103,625.85x = 15,700,956,947.44
  5. Step 5: Solve for x
    x = 15,700,956,947.44/103,625.85
  6. Step 6: Final answer
    x = 151,515.83

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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.