Home / 163,143.72-225,147.60-91,530

Finding the Fourth Proportional to 163,143.72, 225,147.60 and 91,530

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Solution

The fourth proportional to 163,143.72, 225,147.60 and 91,530 is: 126,316.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,143.72 : 225,147.60 = 91,530 : x
  2. Step 2: Convert to fraction form
    163,143.72/225,147.60 = 91,530/x
  3. Step 3: Cross multiply
    163,143.72x = 225,147.60 × 91,530
  4. Step 4: Simplify right side
    163,143.72x = 20,607,759,828
  5. Step 5: Solve for x
    x = 20,607,759,828/163,143.72
  6. Step 6: Final answer
    x = 126,316.60

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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.