Home / 158,743.80-219,067.20-87,124.68

Finding the Fourth Proportional to 158,743.80, 219,067.20 and 87,124.68

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Solution

The fourth proportional to 158,743.80, 219,067.20 and 87,124.68 is: 120,232.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,743.80 : 219,067.20 = 87,124.68 : x
  2. Step 2: Convert to fraction form
    158,743.80/219,067.20 = 87,124.68/x
  3. Step 3: Cross multiply
    158,743.80x = 219,067.20 × 87,124.68
  4. Step 4: Simplify right side
    158,743.80x = 19,086,159,698.50
  5. Step 5: Solve for x
    x = 19,086,159,698.50/158,743.80
  6. Step 6: Final answer
    x = 120,232.47

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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.