Home / 158,789.16-219,134.16-91,721.16

Finding the Fourth Proportional to 158,789.16, 219,134.16 and 91,721.16

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Solution

The fourth proportional to 158,789.16, 219,134.16 and 91,721.16 is: 126,578.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,789.16 : 219,134.16 = 91,721.16 : x
  2. Step 2: Convert to fraction form
    158,789.16/219,134.16 = 91,721.16/x
  3. Step 3: Cross multiply
    158,789.16x = 219,134.16 × 91,721.16
  4. Step 4: Simplify right side
    158,789.16x = 20,099,239,350.83
  5. Step 5: Solve for x
    x = 20,099,239,350.83/158,789.16
  6. Step 6: Final answer
    x = 126,578.16

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1.5x scale

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.