Home / 121,433.40-167,510.70-71,122.68

Finding the Fourth Proportional to 121,433.40, 167,510.70 and 71,122.68

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Solution

The fourth proportional to 121,433.40, 167,510.70 and 71,122.68 is: 98,109.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,433.40 : 167,510.70 = 71,122.68 : x
  2. Step 2: Convert to fraction form
    121,433.40/167,510.70 = 71,122.68/x
  3. Step 3: Cross multiply
    121,433.40x = 167,510.70 × 71,122.68
  4. Step 4: Simplify right side
    121,433.40x = 11,913,809,912.68
  5. Step 5: Solve for x
    x = 11,913,809,912.68/121,433.40
  6. Step 6: Final answer
    x = 98,109.83

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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.