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Finding the Fourth Proportional to 163,615.80, 225,932.94 and 103,294.20

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Solution

The fourth proportional to 163,615.80, 225,932.94 and 103,294.20 is: 142,636.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,615.80 : 225,932.94 = 103,294.20 : x
  2. Step 2: Convert to fraction form
    163,615.80/225,932.94 = 103,294.20/x
  3. Step 3: Cross multiply
    163,615.80x = 225,932.94 × 103,294.20
  4. Step 4: Simplify right side
    163,615.80x = 23,337,562,290.95
  5. Step 5: Solve for x
    x = 23,337,562,290.95/163,615.80
  6. Step 6: Final answer
    x = 142,636.36

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1.5x scale

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.