Home / 121,127.80-167,156.36-67,425.50

Finding the Fourth Proportional to 121,127.80, 167,156.36 and 67,425.50

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Solution

The fourth proportional to 121,127.80, 167,156.36 and 67,425.50 is: 93,047.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,127.80 : 167,156.36 = 67,425.50 : x
  2. Step 2: Convert to fraction form
    121,127.80/167,156.36 = 67,425.50/x
  3. Step 3: Cross multiply
    121,127.80x = 167,156.36 × 67,425.50
  4. Step 4: Simplify right side
    121,127.80x = 11,270,599,978.27
  5. Step 5: Solve for x
    x = 11,270,599,978.27/121,127.80
  6. Step 6: Final answer
    x = 93,047.18

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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.