Home / 102,438.23-153,679.92-31,361.41

Finding the Fourth Proportional to 102,438.23, 153,679.92 and 31,361.41

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Solution

The fourth proportional to 102,438.23, 153,679.92 and 31,361.41 is: 47,049.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,438.23 : 153,679.92 = 31,361.41 : x
  2. Step 2: Convert to fraction form
    102,438.23/153,679.92 = 31,361.41/x
  3. Step 3: Cross multiply
    102,438.23x = 153,679.92 × 31,361.41
  4. Step 4: Simplify right side
    102,438.23x = 4,819,618,595.69
  5. Step 5: Solve for x
    x = 4,819,618,595.69/102,438.23
  6. Step 6: Final answer
    x = 47,049.02

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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.