Home / 91,009.80-136,514.70-81,496.35

Finding the Fourth Proportional to 91,009.80, 136,514.70 and 81,496.35

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Solution

The fourth proportional to 91,009.80, 136,514.70 and 81,496.35 is: 122,244.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,009.80 : 136,514.70 = 81,496.35 : x
  2. Step 2: Convert to fraction form
    91,009.80/136,514.70 = 81,496.35/x
  3. Step 3: Cross multiply
    91,009.80x = 136,514.70 × 81,496.35
  4. Step 4: Simplify right side
    91,009.80x = 11,125,449,771.35
  5. Step 5: Solve for x
    x = 11,125,449,771.35/91,009.80
  6. Step 6: Final answer
    x = 122,244.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.