Home / 207,941.02-311,911.56-81,640.84

Finding the Fourth Proportional to 207,941.02, 311,911.56 and 81,640.84

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Solution

The fourth proportional to 207,941.02, 311,911.56 and 81,640.84 is: 122,461.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,941.02 : 311,911.56 = 81,640.84 : x
  2. Step 2: Convert to fraction form
    207,941.02/311,911.56 = 81,640.84/x
  3. Step 3: Cross multiply
    207,941.02x = 311,911.56 × 81,640.84
  4. Step 4: Simplify right side
    207,941.02x = 25,464,721,764.11
  5. Step 5: Solve for x
    x = 25,464,721,764.11/207,941.02
  6. Step 6: Final answer
    x = 122,461.27

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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.