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Finding the Fourth Proportional to 172,908.75, 238,810.91 and 116,221.71

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Solution

The fourth proportional to 172,908.75, 238,810.91 and 116,221.71 is: 160,518.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,908.75 : 238,810.91 = 116,221.71 : x
  2. Step 2: Convert to fraction form
    172,908.75/238,810.91 = 116,221.71/x
  3. Step 3: Cross multiply
    172,908.75x = 238,810.91 × 116,221.71
  4. Step 4: Simplify right side
    172,908.75x = 27,755,011,745.75
  5. Step 5: Solve for x
    x = 27,755,011,745.75/172,908.75
  6. Step 6: Final answer
    x = 160,518.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.