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Finding the Fourth Proportional to 172,876.01, 259,345.40 and 84,129.57

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Solution

The fourth proportional to 172,876.01, 259,345.40 and 84,129.57 is: 126,209.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,876.01 : 259,345.40 = 84,129.57 : x
  2. Step 2: Convert to fraction form
    172,876.01/259,345.40 = 84,129.57/x
  3. Step 3: Cross multiply
    172,876.01x = 259,345.40 × 84,129.57
  4. Step 4: Simplify right side
    172,876.01x = 21,818,616,562.83
  5. Step 5: Solve for x
    x = 21,818,616,562.83/172,876.01
  6. Step 6: Final answer
    x = 126,209.63

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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.