Home / 115,132.54-158,903.22-86,205.82

Finding the Fourth Proportional to 115,132.54, 158,903.22 and 86,205.82

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Solution

The fourth proportional to 115,132.54, 158,903.22 and 86,205.82 is: 118,979.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,132.54 : 158,903.22 = 86,205.82 : x
  2. Step 2: Convert to fraction form
    115,132.54/158,903.22 = 86,205.82/x
  3. Step 3: Cross multiply
    115,132.54x = 158,903.22 × 86,205.82
  4. Step 4: Simplify right side
    115,132.54x = 13,698,382,380.74
  5. Step 5: Solve for x
    x = 13,698,382,380.74/115,132.54
  6. Step 6: Final answer
    x = 118,979.24

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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.