Home / 158,726.50-219,035.68-87,107.72

Finding the Fourth Proportional to 158,726.50, 219,035.68 and 87,107.72

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Solution

The fourth proportional to 158,726.50, 219,035.68 and 87,107.72 is: 120,204.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,726.50 : 219,035.68 = 87,107.72 : x
  2. Step 2: Convert to fraction form
    158,726.50/219,035.68 = 87,107.72/x
  3. Step 3: Cross multiply
    158,726.50x = 219,035.68 × 87,107.72
  4. Step 4: Simplify right side
    158,726.50x = 19,079,697,370.50
  5. Step 5: Solve for x
    x = 19,079,697,370.50/158,726.50
  6. Step 6: Final answer
    x = 120,204.87

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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.