Home / 99,019.20-148,674.60-76,857.60

Finding the Fourth Proportional to 99,019.20, 148,674.60 and 76,857.60

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Solution

The fourth proportional to 99,019.20, 148,674.60 and 76,857.60 is: 115,399.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,019.20 : 148,674.60 = 76,857.60 : x
  2. Step 2: Convert to fraction form
    99,019.20/148,674.60 = 76,857.60/x
  3. Step 3: Cross multiply
    99,019.20x = 148,674.60 × 76,857.60
  4. Step 4: Simplify right side
    99,019.20x = 11,426,772,936.96
  5. Step 5: Solve for x
    x = 11,426,772,936.96/99,019.20
  6. Step 6: Final answer
    x = 115,399.57

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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.