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Finding the Fourth Proportional to 129,693.48, 194,540.22 and 100,154.40

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Solution

The fourth proportional to 129,693.48, 194,540.22 and 100,154.40 is: 150,231.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,693.48 : 194,540.22 = 100,154.40 : x
  2. Step 2: Convert to fraction form
    129,693.48/194,540.22 = 100,154.40/x
  3. Step 3: Cross multiply
    129,693.48x = 194,540.22 × 100,154.40
  4. Step 4: Simplify right side
    129,693.48x = 19,484,059,009.97
  5. Step 5: Solve for x
    x = 19,484,059,009.97/129,693.48
  6. Step 6: Final answer
    x = 150,231.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.