Home / 121,516.42-167,688.72-66,323.62

Finding the Fourth Proportional to 121,516.42, 167,688.72 and 66,323.62

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Solution

The fourth proportional to 121,516.42, 167,688.72 and 66,323.62 is: 91,524.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,516.42 : 167,688.72 = 66,323.62 : x
  2. Step 2: Convert to fraction form
    121,516.42/167,688.72 = 66,323.62/x
  3. Step 3: Cross multiply
    121,516.42x = 167,688.72 × 66,323.62
  4. Step 4: Simplify right side
    121,516.42x = 11,121,722,943.57
  5. Step 5: Solve for x
    x = 11,121,722,943.57/121,516.42
  6. Step 6: Final answer
    x = 91,524.45

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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.