Home / 159,403.94-219,974.09-87,784.55

Finding the Fourth Proportional to 159,403.94, 219,974.09 and 87,784.55

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Solution

The fourth proportional to 159,403.94, 219,974.09 and 87,784.55 is: 121,140.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,403.94 : 219,974.09 = 87,784.55 : x
  2. Step 2: Convert to fraction form
    159,403.94/219,974.09 = 87,784.55/x
  3. Step 3: Cross multiply
    159,403.94x = 219,974.09 × 87,784.55
  4. Step 4: Simplify right side
    159,403.94x = 19,310,326,502.31
  5. Step 5: Solve for x
    x = 19,310,326,502.31/159,403.94
  6. Step 6: Final answer
    x = 121,140.84

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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.