Home / 154,823.76-213,659.28-86,855.85

Finding the Fourth Proportional to 154,823.76, 213,659.28 and 86,855.85

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Solution

The fourth proportional to 154,823.76, 213,659.28 and 86,855.85 is: 119,862.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,823.76 : 213,659.28 = 86,855.85 : x
  2. Step 2: Convert to fraction form
    154,823.76/213,659.28 = 86,855.85/x
  3. Step 3: Cross multiply
    154,823.76x = 213,659.28 × 86,855.85
  4. Step 4: Simplify right side
    154,823.76x = 18,557,558,374.79
  5. Step 5: Solve for x
    x = 18,557,558,374.79/154,823.76
  6. Step 6: Final answer
    x = 119,862.47

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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.