Home / 86,821.01-130,882.27-81,034.34

Finding the Fourth Proportional to 86,821.01, 130,882.27 and 81,034.34

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Solution

The fourth proportional to 86,821.01, 130,882.27 and 81,034.34 is: 122,158.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,821.01 : 130,882.27 = 81,034.34 : x
  2. Step 2: Convert to fraction form
    86,821.01/130,882.27 = 81,034.34/x
  3. Step 3: Cross multiply
    86,821.01x = 130,882.27 × 81,034.34
  4. Step 4: Simplify right side
    86,821.01x = 10,605,958,367.15
  5. Step 5: Solve for x
    x = 10,605,958,367.15/86,821.01
  6. Step 6: Final answer
    x = 122,158.89

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.