Home / 142,914.30-197,208.81-79,251.90

Finding the Fourth Proportional to 142,914.30, 197,208.81 and 79,251.90

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Solution

The fourth proportional to 142,914.30, 197,208.81 and 79,251.90 is: 109,360.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,914.30 : 197,208.81 = 79,251.90 : x
  2. Step 2: Convert to fraction form
    142,914.30/197,208.81 = 79,251.90/x
  3. Step 3: Cross multiply
    142,914.30x = 197,208.81 × 79,251.90
  4. Step 4: Simplify right side
    142,914.30x = 15,629,172,889.24
  5. Step 5: Solve for x
    x = 15,629,172,889.24/142,914.30
  6. Step 6: Final answer
    x = 109,360.46

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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.