Home / 207,715.37-311,448.22-81,204.93

Finding the Fourth Proportional to 207,715.37, 311,448.22 and 81,204.93

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Solution

The fourth proportional to 207,715.37, 311,448.22 and 81,204.93 is: 121,758.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,715.37 : 311,448.22 = 81,204.93 : x
  2. Step 2: Convert to fraction form
    207,715.37/311,448.22 = 81,204.93/x
  3. Step 3: Cross multiply
    207,715.37x = 311,448.22 × 81,204.93
  4. Step 4: Simplify right side
    207,715.37x = 25,291,130,700.71
  5. Step 5: Solve for x
    x = 25,291,130,700.71/207,715.37
  6. Step 6: Final answer
    x = 121,758.59

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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.