Home / 121,838.72-168,136.97-68,123.57

Finding the Fourth Proportional to 121,838.72, 168,136.97 and 68,123.57

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Solution

The fourth proportional to 121,838.72, 168,136.97 and 68,123.57 is: 94,010.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,838.72 : 168,136.97 = 68,123.57 : x
  2. Step 2: Convert to fraction form
    121,838.72/168,136.97 = 68,123.57/x
  3. Step 3: Cross multiply
    121,838.72x = 168,136.97 × 68,123.57
  4. Step 4: Simplify right side
    121,838.72x = 11,454,089,464.08
  5. Step 5: Solve for x
    x = 11,454,089,464.08/121,838.72
  6. Step 6: Final answer
    x = 94,010.26

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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.