Home / 154,796.29-213,621.29-86,828.35

Finding the Fourth Proportional to 154,796.29, 213,621.29 and 86,828.35

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Solution

The fourth proportional to 154,796.29, 213,621.29 and 86,828.35 is: 119,824.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,796.29 : 213,621.29 = 86,828.35 : x
  2. Step 2: Convert to fraction form
    154,796.29/213,621.29 = 86,828.35/x
  3. Step 3: Cross multiply
    154,796.29x = 213,621.29 × 86,828.35
  4. Step 4: Simplify right side
    154,796.29x = 18,548,384,135.57
  5. Step 5: Solve for x
    x = 18,548,384,135.57/154,796.29
  6. Step 6: Final answer
    x = 119,824.47

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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.