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Finding the Fourth Proportional to 148,801.46, 205,347.50 and 80,819.08

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Solution

The fourth proportional to 148,801.46, 205,347.50 and 80,819.08 is: 111,531.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,801.46 : 205,347.50 = 80,819.08 : x
  2. Step 2: Convert to fraction form
    148,801.46/205,347.50 = 80,819.08/x
  3. Step 3: Cross multiply
    148,801.46x = 205,347.50 × 80,819.08
  4. Step 4: Simplify right side
    148,801.46x = 16,595,996,030.30
  5. Step 5: Solve for x
    x = 16,595,996,030.30/148,801.46
  6. Step 6: Final answer
    x = 111,531.14

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1.5x scale

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.