Home / 102,819.20-154,228.80-91,932.80

Finding the Fourth Proportional to 102,819.20, 154,228.80 and 91,932.80

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Solution

The fourth proportional to 102,819.20, 154,228.80 and 91,932.80 is: 137,899.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,819.20 : 154,228.80 = 91,932.80 : x
  2. Step 2: Convert to fraction form
    102,819.20/154,228.80 = 91,932.80/x
  3. Step 3: Cross multiply
    102,819.20x = 154,228.80 × 91,932.80
  4. Step 4: Simplify right side
    102,819.20x = 14,178,685,424.64
  5. Step 5: Solve for x
    x = 14,178,685,424.64/102,819.20
  6. Step 6: Final answer
    x = 137,899.20

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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.