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Finding the Fourth Proportional to 172,687.86, 259,208.49 and 142,606.29

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Solution

The fourth proportional to 172,687.86, 259,208.49 and 142,606.29 is: 214,055.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,687.86 : 259,208.49 = 142,606.29 : x
  2. Step 2: Convert to fraction form
    172,687.86/259,208.49 = 142,606.29/x
  3. Step 3: Cross multiply
    172,687.86x = 259,208.49 × 142,606.29
  4. Step 4: Simplify right side
    172,687.86x = 36,964,761,095.40
  5. Step 5: Solve for x
    x = 36,964,761,095.40/172,687.86
  6. Step 6: Final answer
    x = 214,055.35

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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.