Home / 154,972.50-213,884.40-86,077.68

Finding the Fourth Proportional to 154,972.50, 213,884.40 and 86,077.68

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Solution

The fourth proportional to 154,972.50, 213,884.40 and 86,077.68 is: 118,799.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,972.50 : 213,884.40 = 86,077.68 : x
  2. Step 2: Convert to fraction form
    154,972.50/213,884.40 = 86,077.68/x
  3. Step 3: Cross multiply
    154,972.50x = 213,884.40 × 86,077.68
  4. Step 4: Simplify right side
    154,972.50x = 18,410,672,940.19
  5. Step 5: Solve for x
    x = 18,410,672,940.19/154,972.50
  6. Step 6: Final answer
    x = 118,799.61

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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.