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Finding the Fourth Proportional to 102,900.80, 154,509.60 and 56,244.80

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Solution

The fourth proportional to 102,900.80, 154,509.60 and 56,244.80 is: 84,453.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,900.80 : 154,509.60 = 56,244.80 : x
  2. Step 2: Convert to fraction form
    102,900.80/154,509.60 = 56,244.80/x
  3. Step 3: Cross multiply
    102,900.80x = 154,509.60 × 56,244.80
  4. Step 4: Simplify right side
    102,900.80x = 8,690,361,550.08
  5. Step 5: Solve for x
    x = 8,690,361,550.08/102,900.80
  6. Step 6: Final answer
    x = 84,453.78

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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.