Home / 171,285.78-257,002.14-66,178.56

Finding the Fourth Proportional to 171,285.78, 257,002.14 and 66,178.56

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Solution

The fourth proportional to 171,285.78, 257,002.14 and 66,178.56 is: 99,296.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,285.78 : 257,002.14 = 66,178.56 : x
  2. Step 2: Convert to fraction form
    171,285.78/257,002.14 = 66,178.56/x
  3. Step 3: Cross multiply
    171,285.78x = 257,002.14 × 66,178.56
  4. Step 4: Simplify right side
    171,285.78x = 17,008,031,542.12
  5. Step 5: Solve for x
    x = 17,008,031,542.12/171,285.78
  6. Step 6: Final answer
    x = 99,296.23

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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.