Home / 129,431.14-194,111.08-81,975.06

Finding the Fourth Proportional to 129,431.14, 194,111.08 and 81,975.06

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Solution

The fourth proportional to 129,431.14, 194,111.08 and 81,975.06 is: 122,940.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,431.14 : 194,111.08 = 81,975.06 : x
  2. Step 2: Convert to fraction form
    129,431.14/194,111.08 = 81,975.06/x
  3. Step 3: Cross multiply
    129,431.14x = 194,111.08 × 81,975.06
  4. Step 4: Simplify right side
    129,431.14x = 15,912,267,429.66
  5. Step 5: Solve for x
    x = 15,912,267,429.66/129,431.14
  6. Step 6: Final answer
    x = 122,940.02

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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.