Home / 154,255.82-212,872.41-86,272.52

Finding the Fourth Proportional to 154,255.82, 212,872.41 and 86,272.52

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Solution

The fourth proportional to 154,255.82, 212,872.41 and 86,272.52 is: 119,055.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,255.82 : 212,872.41 = 86,272.52 : x
  2. Step 2: Convert to fraction form
    154,255.82/212,872.41 = 86,272.52/x
  3. Step 3: Cross multiply
    154,255.82x = 212,872.41 × 86,272.52
  4. Step 4: Simplify right side
    154,255.82x = 18,365,038,184.81
  5. Step 5: Solve for x
    x = 18,365,038,184.81/154,255.82
  6. Step 6: Final answer
    x = 119,055.73

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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.