Home / 129,570.12-194,271.90-54,669.78

Finding the Fourth Proportional to 129,570.12, 194,271.90 and 54,669.78

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Solution

The fourth proportional to 129,570.12, 194,271.90 and 54,669.78 is: 81,969.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,570.12 : 194,271.90 = 54,669.78 : x
  2. Step 2: Convert to fraction form
    129,570.12/194,271.90 = 54,669.78/x
  3. Step 3: Cross multiply
    129,570.12x = 194,271.90 × 54,669.78
  4. Step 4: Simplify right side
    129,570.12x = 10,620,802,033.18
  5. Step 5: Solve for x
    x = 10,620,802,033.18/129,570.12
  6. Step 6: Final answer
    x = 81,969.53

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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.