Home / 102,515.12-153,795.25-31,447.54

Finding the Fourth Proportional to 102,515.12, 153,795.25 and 31,447.54

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Solution

The fourth proportional to 102,515.12, 153,795.25 and 31,447.54 is: 47,178.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,515.12 : 153,795.25 = 31,447.54 : x
  2. Step 2: Convert to fraction form
    102,515.12/153,795.25 = 31,447.54/x
  3. Step 3: Cross multiply
    102,515.12x = 153,795.25 × 31,447.54
  4. Step 4: Simplify right side
    102,515.12x = 4,836,481,507.21
  5. Step 5: Solve for x
    x = 4,836,481,507.21/102,515.12
  6. Step 6: Final answer
    x = 47,178.23

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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.