Home / 221,505.90-332,356.05-103,116.30

Finding the Fourth Proportional to 221,505.90, 332,356.05 and 103,116.30

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Solution

The fourth proportional to 221,505.90, 332,356.05 and 103,116.30 is: 154,719.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,505.90 : 332,356.05 = 103,116.30 : x
  2. Step 2: Convert to fraction form
    221,505.90/332,356.05 = 103,116.30/x
  3. Step 3: Cross multiply
    221,505.90x = 332,356.05 × 103,116.30
  4. Step 4: Simplify right side
    221,505.90x = 34,271,326,158.62
  5. Step 5: Solve for x
    x = 34,271,326,158.62/221,505.90
  6. Step 6: Final answer
    x = 154,719.70

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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.