Home / 129,884.09-194,887.76-89,964.45

Finding the Fourth Proportional to 129,884.09, 194,887.76 and 89,964.45

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Solution

The fourth proportional to 129,884.09, 194,887.76 and 89,964.45 is: 134,989.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,884.09 : 194,887.76 = 89,964.45 : x
  2. Step 2: Convert to fraction form
    129,884.09/194,887.76 = 89,964.45/x
  3. Step 3: Cross multiply
    129,884.09x = 194,887.76 × 89,964.45
  4. Step 4: Simplify right side
    129,884.09x = 17,532,969,690.31
  5. Step 5: Solve for x
    x = 17,532,969,690.31/129,884.09
  6. Step 6: Final answer
    x = 134,989.36

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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.