Home / 154,028.35-212,551.53-86,031.79

Finding the Fourth Proportional to 154,028.35, 212,551.53 and 86,031.79

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Solution

The fourth proportional to 154,028.35, 212,551.53 and 86,031.79 is: 118,719.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,028.35 : 212,551.53 = 86,031.79 : x
  2. Step 2: Convert to fraction form
    154,028.35/212,551.53 = 86,031.79/x
  3. Step 3: Cross multiply
    154,028.35x = 212,551.53 × 86,031.79
  4. Step 4: Simplify right side
    154,028.35x = 18,286,187,739.14
  5. Step 5: Solve for x
    x = 18,286,187,739.14/154,028.35
  6. Step 6: Final answer
    x = 118,719.62

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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.