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Finding the Fourth Proportional to 170,901.54, 256,404.15 and 121,078.04

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Solution

The fourth proportional to 170,901.54, 256,404.15 and 121,078.04 is: 181,653.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,901.54 : 256,404.15 = 121,078.04 : x
  2. Step 2: Convert to fraction form
    170,901.54/256,404.15 = 121,078.04/x
  3. Step 3: Cross multiply
    170,901.54x = 256,404.15 × 121,078.04
  4. Step 4: Simplify right side
    170,901.54x = 31,044,910,647.85
  5. Step 5: Solve for x
    x = 31,044,910,647.85/170,901.54
  6. Step 6: Final answer
    x = 181,653.78

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1.5x scale

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.