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Finding the Fourth Proportional to 121,194.90, 181,719.45 and 62,145.90

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Solution

The fourth proportional to 121,194.90, 181,719.45 and 62,145.90 is: 93,181.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,194.90 : 181,719.45 = 62,145.90 : x
  2. Step 2: Convert to fraction form
    121,194.90/181,719.45 = 62,145.90/x
  3. Step 3: Cross multiply
    121,194.90x = 181,719.45 × 62,145.90
  4. Step 4: Simplify right side
    121,194.90x = 11,293,118,767.76
  5. Step 5: Solve for x
    x = 11,293,118,767.76/121,194.90
  6. Step 6: Final answer
    x = 93,181.47

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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.