Home / 111,402.36-166,713.04-79,847.20

Finding the Fourth Proportional to 111,402.36, 166,713.04 and 79,847.20

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Solution

The fourth proportional to 111,402.36, 166,713.04 and 79,847.20 is: 119,490.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,402.36 : 166,713.04 = 79,847.20 : x
  2. Step 2: Convert to fraction form
    111,402.36/166,713.04 = 79,847.20/x
  3. Step 3: Cross multiply
    111,402.36x = 166,713.04 × 79,847.20
  4. Step 4: Simplify right side
    111,402.36x = 13,311,569,447.49
  5. Step 5: Solve for x
    x = 13,311,569,447.49/111,402.36
  6. Step 6: Final answer
    x = 119,490.91

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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.