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Finding the Fourth Proportional to 196,987.97, 295,511.12 and 72,319.25

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Solution

The fourth proportional to 196,987.97, 295,511.12 and 72,319.25 is: 108,489.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,987.97 : 295,511.12 = 72,319.25 : x
  2. Step 2: Convert to fraction form
    196,987.97/295,511.12 = 72,319.25/x
  3. Step 3: Cross multiply
    196,987.97x = 295,511.12 × 72,319.25
  4. Step 4: Simplify right side
    196,987.97x = 21,371,142,565.06
  5. Step 5: Solve for x
    x = 21,371,142,565.06/196,987.97
  6. Step 6: Final answer
    x = 108,489.58

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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.