Home / 129,507.81-194,288.00-40,740.67

Finding the Fourth Proportional to 129,507.81, 194,288.00 and 40,740.67

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Solution

The fourth proportional to 129,507.81, 194,288.00 and 40,740.67 is: 61,119.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,507.81 : 194,288.00 = 40,740.67 : x
  2. Step 2: Convert to fraction form
    129,507.81/194,288.00 = 40,740.67/x
  3. Step 3: Cross multiply
    129,507.81x = 194,288.00 × 40,740.67
  4. Step 4: Simplify right side
    129,507.81x = 7,915,423,772.80
  5. Step 5: Solve for x
    x = 7,915,423,772.80/129,507.81
  6. Step 6: Final answer
    x = 61,119.28

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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.