Home / 138,219.93-207,320.04-53,964.32

Finding the Fourth Proportional to 138,219.93, 207,320.04 and 53,964.32

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Solution

The fourth proportional to 138,219.93, 207,320.04 and 53,964.32 is: 80,942.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,219.93 : 207,320.04 = 53,964.32 : x
  2. Step 2: Convert to fraction form
    138,219.93/207,320.04 = 53,964.32/x
  3. Step 3: Cross multiply
    138,219.93x = 207,320.04 × 53,964.32
  4. Step 4: Simplify right side
    138,219.93x = 11,187,883,944.37
  5. Step 5: Solve for x
    x = 11,187,883,944.37/138,219.93
  6. Step 6: Final answer
    x = 80,942.62

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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.