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Finding the Fourth Proportional to 121,441.98, 181,819.53 and 64,385.91

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Solution

The fourth proportional to 121,441.98, 181,819.53 and 64,385.91 is: 96,396.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,441.98 : 181,819.53 = 64,385.91 : x
  2. Step 2: Convert to fraction form
    121,441.98/181,819.53 = 64,385.91/x
  3. Step 3: Cross multiply
    121,441.98x = 181,819.53 × 64,385.91
  4. Step 4: Simplify right side
    121,441.98x = 11,706,615,894.82
  5. Step 5: Solve for x
    x = 11,706,615,894.82/121,441.98
  6. Step 6: Final answer
    x = 96,396.78

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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.