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Finding the Fourth Proportional to 110,992, 153,169.60 and 71,248

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Solution

The fourth proportional to 110,992, 153,169.60 and 71,248 is: 98,322.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,992 : 153,169.60 = 71,248 : x
  2. Step 2: Convert to fraction form
    110,992/153,169.60 = 71,248/x
  3. Step 3: Cross multiply
    110,992x = 153,169.60 × 71,248
  4. Step 4: Simplify right side
    110,992x = 10,913,027,660.80
  5. Step 5: Solve for x
    x = 10,913,027,660.80/110,992
  6. Step 6: Final answer
    x = 98,322.65

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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.