Home / 154,835.58-213,672.95-87,767.58

Finding the Fourth Proportional to 154,835.58, 213,672.95 and 87,767.58

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Solution

The fourth proportional to 154,835.58, 213,672.95 and 87,767.58 is: 121,119.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,835.58 : 213,672.95 = 87,767.58 : x
  2. Step 2: Convert to fraction form
    154,835.58/213,672.95 = 87,767.58/x
  3. Step 3: Cross multiply
    154,835.58x = 213,672.95 × 87,767.58
  4. Step 4: Simplify right side
    154,835.58x = 18,753,557,732.96
  5. Step 5: Solve for x
    x = 18,753,557,732.96/154,835.58
  6. Step 6: Final answer
    x = 121,119.18

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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.