Home / 121,915.32-168,235.24-68,191.04

Finding the Fourth Proportional to 121,915.32, 168,235.24 and 68,191.04

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Solution

The fourth proportional to 121,915.32, 168,235.24 and 68,191.04 is: 94,099.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,915.32 : 168,235.24 = 68,191.04 : x
  2. Step 2: Convert to fraction form
    121,915.32/168,235.24 = 68,191.04/x
  3. Step 3: Cross multiply
    121,915.32x = 168,235.24 × 68,191.04
  4. Step 4: Simplify right side
    121,915.32x = 11,472,135,980.25
  5. Step 5: Solve for x
    x = 11,472,135,980.25/121,915.32
  6. Step 6: Final answer
    x = 94,099.22

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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.