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Finding the Fourth Proportional to 121,328.40, 181,992.60 and 62,279.40

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Solution

The fourth proportional to 121,328.40, 181,992.60 and 62,279.40 is: 93,419.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,328.40 : 181,992.60 = 62,279.40 : x
  2. Step 2: Convert to fraction form
    121,328.40/181,992.60 = 62,279.40/x
  3. Step 3: Cross multiply
    121,328.40x = 181,992.60 × 62,279.40
  4. Step 4: Simplify right side
    121,328.40x = 11,334,389,932.44
  5. Step 5: Solve for x
    x = 11,334,389,932.44/121,328.40
  6. Step 6: Final answer
    x = 93,419.10

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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.