Home / 129,576.95-194,396.09-40,830.15

Finding the Fourth Proportional to 129,576.95, 194,396.09 and 40,830.15

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Solution

The fourth proportional to 129,576.95, 194,396.09 and 40,830.15 is: 61,254.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,576.95 : 194,396.09 = 40,830.15 : x
  2. Step 2: Convert to fraction form
    129,576.95/194,396.09 = 40,830.15/x
  3. Step 3: Cross multiply
    129,576.95x = 194,396.09 × 40,830.15
  4. Step 4: Simplify right side
    129,576.95x = 7,937,221,309.96
  5. Step 5: Solve for x
    x = 7,937,221,309.96/129,576.95
  6. Step 6: Final answer
    x = 61,254.89

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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.