Home / 121,531.44-167,707.68-89,688.72

Finding the Fourth Proportional to 121,531.44, 167,707.68 and 89,688.72

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Solution

The fourth proportional to 121,531.44, 167,707.68 and 89,688.72 is: 123,766.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,531.44 : 167,707.68 = 89,688.72 : x
  2. Step 2: Convert to fraction form
    121,531.44/167,707.68 = 89,688.72/x
  3. Step 3: Cross multiply
    121,531.44x = 167,707.68 × 89,688.72
  4. Step 4: Simplify right side
    121,531.44x = 15,041,487,153.37
  5. Step 5: Solve for x
    x = 15,041,487,153.37/121,531.44
  6. Step 6: Final answer
    x = 123,766.22

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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.