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Finding the Fourth Proportional to 172,294.11, 258,616.13 and 122,430.51

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Solution

The fourth proportional to 172,294.11, 258,616.13 and 122,430.51 is: 183,770.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,294.11 : 258,616.13 = 122,430.51 : x
  2. Step 2: Convert to fraction form
    172,294.11/258,616.13 = 122,430.51/x
  3. Step 3: Cross multiply
    172,294.11x = 258,616.13 × 122,430.51
  4. Step 4: Simplify right side
    172,294.11x = 31,662,504,077.97
  5. Step 5: Solve for x
    x = 31,662,504,077.97/172,294.11
  6. Step 6: Final answer
    x = 183,770.09

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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.