Home / 81,822.60-122,561.10-67,998.60

Finding the Fourth Proportional to 81,822.60, 122,561.10 and 67,998.60

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Solution

The fourth proportional to 81,822.60, 122,561.10 and 67,998.60 is: 101,854.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,822.60 : 122,561.10 = 67,998.60 : x
  2. Step 2: Convert to fraction form
    81,822.60/122,561.10 = 67,998.60/x
  3. Step 3: Cross multiply
    81,822.60x = 122,561.10 × 67,998.60
  4. Step 4: Simplify right side
    81,822.60x = 8,333,983,214.46
  5. Step 5: Solve for x
    x = 8,333,983,214.46/81,822.60
  6. Step 6: Final answer
    x = 101,854.29

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1.5x scale

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.