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Finding the Fourth Proportional to 121,014.80, 167,000.40 and 68,022.80

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Solution

The fourth proportional to 121,014.80, 167,000.40 and 68,022.80 is: 93,871.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,014.80 : 167,000.40 = 68,022.80 : x
  2. Step 2: Convert to fraction form
    121,014.80/167,000.40 = 68,022.80/x
  3. Step 3: Cross multiply
    121,014.80x = 167,000.40 × 68,022.80
  4. Step 4: Simplify right side
    121,014.80x = 11,359,834,809.12
  5. Step 5: Solve for x
    x = 11,359,834,809.12/121,014.80
  6. Step 6: Final answer
    x = 93,871.45

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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.