Home / 154,885.25-213,765.75-86,929.69

Finding the Fourth Proportional to 154,885.25, 213,765.75 and 86,929.69

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Solution

The fourth proportional to 154,885.25, 213,765.75 and 86,929.69 is: 119,976.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,885.25 : 213,765.75 = 86,929.69 : x
  2. Step 2: Convert to fraction form
    154,885.25/213,765.75 = 86,929.69/x
  3. Step 3: Cross multiply
    154,885.25x = 213,765.75 × 86,929.69
  4. Step 4: Simplify right side
    154,885.25x = 18,582,590,380.12
  5. Step 5: Solve for x
    x = 18,582,590,380.12/154,885.25
  6. Step 6: Final answer
    x = 119,976.50

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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.