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Finding the Fourth Proportional to 115,321, 159,142.98 and 62,329

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Solution

The fourth proportional to 115,321, 159,142.98 and 62,329 is: 86,014.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,321 : 159,142.98 = 62,329 : x
  2. Step 2: Convert to fraction form
    115,321/159,142.98 = 62,329/x
  3. Step 3: Cross multiply
    115,321x = 159,142.98 × 62,329
  4. Step 4: Simplify right side
    115,321x = 9,919,222,800.42
  5. Step 5: Solve for x
    x = 9,919,222,800.42/115,321
  6. Step 6: Final answer
    x = 86,014.02

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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.