Home / 159,819.18-220,630.32-99,409.26

Finding the Fourth Proportional to 159,819.18, 220,630.32 and 99,409.26

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Solution

The fourth proportional to 159,819.18, 220,630.32 and 99,409.26 is: 137,234.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,819.18 : 220,630.32 = 99,409.26 : x
  2. Step 2: Convert to fraction form
    159,819.18/220,630.32 = 99,409.26/x
  3. Step 3: Cross multiply
    159,819.18x = 220,630.32 × 99,409.26
  4. Step 4: Simplify right side
    159,819.18x = 21,932,696,844.76
  5. Step 5: Solve for x
    x = 21,932,696,844.76/159,819.18
  6. Step 6: Final answer
    x = 137,234.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.