Home / 159,389.54-219,957.55-87,769.39

Finding the Fourth Proportional to 159,389.54, 219,957.55 and 87,769.39

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Solution

The fourth proportional to 159,389.54, 219,957.55 and 87,769.39 is: 121,121.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,389.54 : 219,957.55 = 87,769.39 : x
  2. Step 2: Convert to fraction form
    159,389.54/219,957.55 = 87,769.39/x
  3. Step 3: Cross multiply
    159,389.54x = 219,957.55 × 87,769.39
  4. Step 4: Simplify right side
    159,389.54x = 19,305,539,220.08
  5. Step 5: Solve for x
    x = 19,305,539,220.08/159,389.54
  6. Step 6: Final answer
    x = 121,121.74

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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.