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Finding the Fourth Proportional to 148,681.08, 205,180.05 and 80,698.05

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Solution

The fourth proportional to 148,681.08, 205,180.05 and 80,698.05 is: 111,363.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,681.08 : 205,180.05 = 80,698.05 : x
  2. Step 2: Convert to fraction form
    148,681.08/205,180.05 = 80,698.05/x
  3. Step 3: Cross multiply
    148,681.08x = 205,180.05 × 80,698.05
  4. Step 4: Simplify right side
    148,681.08x = 16,557,629,933.90
  5. Step 5: Solve for x
    x = 16,557,629,933.90/148,681.08
  6. Step 6: Final answer
    x = 111,363.40

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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.