Home / 99,501.60-149,122.80-40,288.80

Finding the Fourth Proportional to 99,501.60, 149,122.80 and 40,288.80

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Solution

The fourth proportional to 99,501.60, 149,122.80 and 40,288.80 is: 60,380.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,501.60 : 149,122.80 = 40,288.80 : x
  2. Step 2: Convert to fraction form
    99,501.60/149,122.80 = 40,288.80/x
  3. Step 3: Cross multiply
    99,501.60x = 149,122.80 × 40,288.80
  4. Step 4: Simplify right side
    99,501.60x = 6,007,978,664.64
  5. Step 5: Solve for x
    x = 6,007,978,664.64/99,501.60
  6. Step 6: Final answer
    x = 60,380.72

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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.