Home / 81,849.60-122,092.80-80,495.04

Finding the Fourth Proportional to 81,849.60, 122,092.80 and 80,495.04

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Solution

The fourth proportional to 81,849.60, 122,092.80 and 80,495.04 is: 120,072.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,849.60 : 122,092.80 = 80,495.04 : x
  2. Step 2: Convert to fraction form
    81,849.60/122,092.80 = 80,495.04/x
  3. Step 3: Cross multiply
    81,849.60x = 122,092.80 × 80,495.04
  4. Step 4: Simplify right side
    81,849.60x = 9,827,864,819.71
  5. Step 5: Solve for x
    x = 9,827,864,819.71/81,849.60
  6. Step 6: Final answer
    x = 120,072.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.