Home / 121,140.40-167,172.06-67,425.43

Finding the Fourth Proportional to 121,140.40, 167,172.06 and 67,425.43

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Solution

The fourth proportional to 121,140.40, 167,172.06 and 67,425.43 is: 93,046.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,140.40 : 167,172.06 = 67,425.43 : x
  2. Step 2: Convert to fraction form
    121,140.40/167,172.06 = 67,425.43/x
  3. Step 3: Cross multiply
    121,140.40x = 167,172.06 × 67,425.43
  4. Step 4: Simplify right side
    121,140.40x = 11,271,648,029.49
  5. Step 5: Solve for x
    x = 11,271,648,029.49/121,140.40
  6. Step 6: Final answer
    x = 93,046.15

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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.