Home / 170,455.52-255,715.68-76,961

Finding the Fourth Proportional to 170,455.52, 255,715.68 and 76,961

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Solution

The fourth proportional to 170,455.52, 255,715.68 and 76,961 is: 115,456.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,455.52 : 255,715.68 = 76,961 : x
  2. Step 2: Convert to fraction form
    170,455.52/255,715.68 = 76,961/x
  3. Step 3: Cross multiply
    170,455.52x = 255,715.68 × 76,961
  4. Step 4: Simplify right side
    170,455.52x = 19,680,134,448.48
  5. Step 5: Solve for x
    x = 19,680,134,448.48/170,455.52
  6. Step 6: Final answer
    x = 115,456.13

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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.