Home / 207,105.58-310,776.36-80,729.38

Finding the Fourth Proportional to 207,105.58, 310,776.36 and 80,729.38

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Solution

The fourth proportional to 207,105.58, 310,776.36 and 80,729.38 is: 121,140.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,105.58 : 310,776.36 = 80,729.38 : x
  2. Step 2: Convert to fraction form
    207,105.58/310,776.36 = 80,729.38/x
  3. Step 3: Cross multiply
    207,105.58x = 310,776.36 × 80,729.38
  4. Step 4: Simplify right side
    207,105.58x = 25,088,782,861.46
  5. Step 5: Solve for x
    x = 25,088,782,861.46/207,105.58
  6. Step 6: Final answer
    x = 121,140.06

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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.