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Finding the Fourth Proportional to 102,880.80, 154,321.20 and 98,944.20

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Solution

The fourth proportional to 102,880.80, 154,321.20 and 98,944.20 is: 148,416.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,880.80 : 154,321.20 = 98,944.20 : x
  2. Step 2: Convert to fraction form
    102,880.80/154,321.20 = 98,944.20/x
  3. Step 3: Cross multiply
    102,880.80x = 154,321.20 × 98,944.20
  4. Step 4: Simplify right side
    102,880.80x = 15,269,187,677.04
  5. Step 5: Solve for x
    x = 15,269,187,677.04/102,880.80
  6. Step 6: Final answer
    x = 148,416.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.