Home / 154,021.32-231,031.81-57,976.47

Finding the Fourth Proportional to 154,021.32, 231,031.81 and 57,976.47

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Solution

The fourth proportional to 154,021.32, 231,031.81 and 57,976.47 is: 86,964.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,021.32 : 231,031.81 = 57,976.47 : x
  2. Step 2: Convert to fraction form
    154,021.32/231,031.81 = 57,976.47/x
  3. Step 3: Cross multiply
    154,021.32x = 231,031.81 × 57,976.47
  4. Step 4: Simplify right side
    154,021.32x = 13,394,408,801.51
  5. Step 5: Solve for x
    x = 13,394,408,801.51/154,021.32
  6. Step 6: Final answer
    x = 86,964.64

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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.