Home / 115,131.54-158,901.84-86,204.82

Finding the Fourth Proportional to 115,131.54, 158,901.84 and 86,204.82

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Solution

The fourth proportional to 115,131.54, 158,901.84 and 86,204.82 is: 118,977.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,131.54 : 158,901.84 = 86,204.82 : x
  2. Step 2: Convert to fraction form
    115,131.54/158,901.84 = 86,204.82/x
  3. Step 3: Cross multiply
    115,131.54x = 158,901.84 × 86,204.82
  4. Step 4: Simplify right side
    115,131.54x = 13,698,104,514.87
  5. Step 5: Solve for x
    x = 13,698,104,514.87/115,131.54
  6. Step 6: Final answer
    x = 118,977.86

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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.