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Finding the Fourth Proportional to 188,494.88, 260,168.88 and 115,915.64

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Solution

The fourth proportional to 188,494.88, 260,168.88 and 115,915.64 is: 159,991.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,494.88 : 260,168.88 = 115,915.64 : x
  2. Step 2: Convert to fraction form
    188,494.88/260,168.88 = 115,915.64/x
  3. Step 3: Cross multiply
    188,494.88x = 260,168.88 × 115,915.64
  4. Step 4: Simplify right side
    188,494.88x = 30,157,642,233.28
  5. Step 5: Solve for x
    x = 30,157,642,233.28/188,494.88
  6. Step 6: Final answer
    x = 159,991.84

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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.