Home / 148,836.78-205,396.65-80,854.02

Finding the Fourth Proportional to 148,836.78, 205,396.65 and 80,854.02

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Solution

The fourth proportional to 148,836.78, 205,396.65 and 80,854.02 is: 111,579.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,836.78 : 205,396.65 = 80,854.02 : x
  2. Step 2: Convert to fraction form
    148,836.78/205,396.65 = 80,854.02/x
  3. Step 3: Cross multiply
    148,836.78x = 205,396.65 × 80,854.02
  4. Step 4: Simplify right side
    148,836.78x = 16,607,144,847.03
  5. Step 5: Solve for x
    x = 16,607,144,847.03/148,836.78
  6. Step 6: Final answer
    x = 111,579.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.