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Finding the Fourth Proportional to 148,969.74, 205,579.08 and 80,987.22

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Solution

The fourth proportional to 148,969.74, 205,579.08 and 80,987.22 is: 111,762.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,969.74 : 205,579.08 = 80,987.22 : x
  2. Step 2: Convert to fraction form
    148,969.74/205,579.08 = 80,987.22/x
  3. Step 3: Cross multiply
    148,969.74x = 205,579.08 × 80,987.22
  4. Step 4: Simplify right side
    148,969.74x = 16,649,278,179.36
  5. Step 5: Solve for x
    x = 16,649,278,179.36/148,969.74
  6. Step 6: Final answer
    x = 111,762.82

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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.