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Finding the Fourth Proportional to 148,883.79, 205,460.93 and 80,900.76

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Solution

The fourth proportional to 148,883.79, 205,460.93 and 80,900.76 is: 111,643.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,883.79 : 205,460.93 = 80,900.76 : x
  2. Step 2: Convert to fraction form
    148,883.79/205,460.93 = 80,900.76/x
  3. Step 3: Cross multiply
    148,883.79x = 205,460.93 × 80,900.76
  4. Step 4: Simplify right side
    148,883.79x = 16,621,944,982.80
  5. Step 5: Solve for x
    x = 16,621,944,982.80/148,883.79
  6. Step 6: Final answer
    x = 111,643.75

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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.