Home / 154,821.72-213,671.04-86,845.32

Finding the Fourth Proportional to 154,821.72, 213,671.04 and 86,845.32

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Solution

The fourth proportional to 154,821.72, 213,671.04 and 86,845.32 is: 119,856.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,821.72 : 213,671.04 = 86,845.32 : x
  2. Step 2: Convert to fraction form
    154,821.72/213,671.04 = 86,845.32/x
  3. Step 3: Cross multiply
    154,821.72x = 213,671.04 × 86,845.32
  4. Step 4: Simplify right side
    154,821.72x = 18,556,329,843.53
  5. Step 5: Solve for x
    x = 18,556,329,843.53/154,821.72
  6. Step 6: Final answer
    x = 119,856.11

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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.