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Finding the Fourth Proportional to 161,694.93, 221,523.13 and 155,634.47

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Solution

The fourth proportional to 161,694.93, 221,523.13 and 155,634.47 is: 213,220.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,694.93 : 221,523.13 = 155,634.47 : x
  2. Step 2: Convert to fraction form
    161,694.93/221,523.13 = 155,634.47/x
  3. Step 3: Cross multiply
    161,694.93x = 221,523.13 × 155,634.47
  4. Step 4: Simplify right side
    161,694.93x = 34,476,634,930.29
  5. Step 5: Solve for x
    x = 34,476,634,930.29/161,694.93
  6. Step 6: Final answer
    x = 213,220.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.