Home / 102,980.20-154,355.10-43,805.80

Finding the Fourth Proportional to 102,980.20, 154,355.10 and 43,805.80

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Solution

The fourth proportional to 102,980.20, 154,355.10 and 43,805.80 is: 65,659.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,980.20 : 154,355.10 = 43,805.80 : x
  2. Step 2: Convert to fraction form
    102,980.20/154,355.10 = 43,805.80/x
  3. Step 3: Cross multiply
    102,980.20x = 154,355.10 × 43,805.80
  4. Step 4: Simplify right side
    102,980.20x = 6,761,648,639.58
  5. Step 5: Solve for x
    x = 6,761,648,639.58/102,980.20
  6. Step 6: Final answer
    x = 65,659.70

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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.