Home / 103,028.20-154,688.10-80,866.60

Finding the Fourth Proportional to 103,028.20, 154,688.10 and 80,866.60

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Solution

The fourth proportional to 103,028.20, 154,688.10 and 80,866.60 is: 121,414.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,028.20 : 154,688.10 = 80,866.60 : x
  2. Step 2: Convert to fraction form
    103,028.20/154,688.10 = 80,866.60/x
  3. Step 3: Cross multiply
    103,028.20x = 154,688.10 × 80,866.60
  4. Step 4: Simplify right side
    103,028.20x = 12,509,100,707.46
  5. Step 5: Solve for x
    x = 12,509,100,707.46/103,028.20
  6. Step 6: Final answer
    x = 121,414.34

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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.