Home / 159,135.27-219,602.28-87,515.29

Finding the Fourth Proportional to 159,135.27, 219,602.28 and 87,515.29

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Solution

The fourth proportional to 159,135.27, 219,602.28 and 87,515.29 is: 120,768.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,135.27 : 219,602.28 = 87,515.29 : x
  2. Step 2: Convert to fraction form
    159,135.27/219,602.28 = 87,515.29/x
  3. Step 3: Cross multiply
    159,135.27x = 219,602.28 × 87,515.29
  4. Step 4: Simplify right side
    159,135.27x = 19,218,557,218.86
  5. Step 5: Solve for x
    x = 19,218,557,218.86/159,135.27
  6. Step 6: Final answer
    x = 120,768.68

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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.