Home / 154,118.43-212,665.50-86,135.54

Finding the Fourth Proportional to 154,118.43, 212,665.50 and 86,135.54

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Solution

The fourth proportional to 154,118.43, 212,665.50 and 86,135.54 is: 118,857.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,118.43 : 212,665.50 = 86,135.54 : x
  2. Step 2: Convert to fraction form
    154,118.43/212,665.50 = 86,135.54/x
  3. Step 3: Cross multiply
    154,118.43x = 212,665.50 × 86,135.54
  4. Step 4: Simplify right side
    154,118.43x = 18,318,056,618.54
  5. Step 5: Solve for x
    x = 18,318,056,618.54/154,118.43
  6. Step 6: Final answer
    x = 118,857.02

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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.