Home / 74,188.50-102,380.25-40,196.98

Finding the Fourth Proportional to 74,188.50, 102,380.25 and 40,196.98

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Solution

The fourth proportional to 74,188.50, 102,380.25 and 40,196.98 is: 55,471.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,188.50 : 102,380.25 = 40,196.98 : x
  2. Step 2: Convert to fraction form
    74,188.50/102,380.25 = 40,196.98/x
  3. Step 3: Cross multiply
    74,188.50x = 102,380.25 × 40,196.98
  4. Step 4: Simplify right side
    74,188.50x = 4,115,376,861.65
  5. Step 5: Solve for x
    x = 4,115,376,861.65/74,188.50
  6. Step 6: Final answer
    x = 55,471.90

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1.5x scale

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.