Home / 102,678.21-154,017.21-38,648.31

Finding the Fourth Proportional to 102,678.21, 154,017.21 and 38,648.31

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Solution

The fourth proportional to 102,678.21, 154,017.21 and 38,648.31 is: 57,972.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,678.21 : 154,017.21 = 38,648.31 : x
  2. Step 2: Convert to fraction form
    102,678.21/154,017.21 = 38,648.31/x
  3. Step 3: Cross multiply
    102,678.21x = 154,017.21 × 38,648.31
  4. Step 4: Simplify right side
    102,678.21x = 5,952,504,877.42
  5. Step 5: Solve for x
    x = 5,952,504,877.42/102,678.21
  6. Step 6: Final answer
    x = 57,972.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.