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Finding the Fourth Proportional to 124,986, 172,482.30 and 68,396.16

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Solution

The fourth proportional to 124,986, 172,482.30 and 68,396.16 is: 94,387.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,986 : 172,482.30 = 68,396.16 : x
  2. Step 2: Convert to fraction form
    124,986/172,482.30 = 68,396.16/x
  3. Step 3: Cross multiply
    124,986x = 172,482.30 × 68,396.16
  4. Step 4: Simplify right side
    124,986x = 11,797,126,987.97
  5. Step 5: Solve for x
    x = 11,797,126,987.97/124,986
  6. Step 6: Final answer
    x = 94,387.59

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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.