Home / 121,388.79-167,516.55-67,672.65

Finding the Fourth Proportional to 121,388.79, 167,516.55 and 67,672.65

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Solution

The fourth proportional to 121,388.79, 167,516.55 and 67,672.65 is: 93,388.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,388.79 : 167,516.55 = 67,672.65 : x
  2. Step 2: Convert to fraction form
    121,388.79/167,516.55 = 67,672.65/x
  3. Step 3: Cross multiply
    121,388.79x = 167,516.55 × 67,672.65
  4. Step 4: Simplify right side
    121,388.79x = 11,336,288,857.36
  5. Step 5: Solve for x
    x = 11,336,288,857.36/121,388.79
  6. Step 6: Final answer
    x = 93,388.27

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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.