Home / 154,418.27-213,087.35-86,423.78

Finding the Fourth Proportional to 154,418.27, 213,087.35 and 86,423.78

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Solution

The fourth proportional to 154,418.27, 213,087.35 and 86,423.78 is: 119,259.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,418.27 : 213,087.35 = 86,423.78 : x
  2. Step 2: Convert to fraction form
    154,418.27/213,087.35 = 86,423.78/x
  3. Step 3: Cross multiply
    154,418.27x = 213,087.35 × 86,423.78
  4. Step 4: Simplify right side
    154,418.27x = 18,415,815,005.96
  5. Step 5: Solve for x
    x = 18,415,815,005.96/154,418.27
  6. Step 6: Final answer
    x = 119,259.31

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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.