Home / 158,719.48-219,032.24-87,100.70

Finding the Fourth Proportional to 158,719.48, 219,032.24 and 87,100.70

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Solution

The fourth proportional to 158,719.48, 219,032.24 and 87,100.70 is: 120,198.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,719.48 : 219,032.24 = 87,100.70 : x
  2. Step 2: Convert to fraction form
    158,719.48/219,032.24 = 87,100.70/x
  3. Step 3: Cross multiply
    158,719.48x = 219,032.24 × 87,100.70
  4. Step 4: Simplify right side
    158,719.48x = 19,077,859,895.90
  5. Step 5: Solve for x
    x = 19,077,859,895.90/158,719.48
  6. Step 6: Final answer
    x = 120,198.60

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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.