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Finding the Fourth Proportional to 86,198.78, 118,926.63 and 52,196.40

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Solution

The fourth proportional to 86,198.78, 118,926.63 and 52,196.40 is: 72,014.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,198.78 : 118,926.63 = 52,196.40 : x
  2. Step 2: Convert to fraction form
    86,198.78/118,926.63 = 52,196.40/x
  3. Step 3: Cross multiply
    86,198.78x = 118,926.63 × 52,196.40
  4. Step 4: Simplify right side
    86,198.78x = 6,207,541,950.13
  5. Step 5: Solve for x
    x = 6,207,541,950.13/86,198.78
  6. Step 6: Final answer
    x = 72,014.26

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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.