Home / 129,721.60-194,438.40-50,809.60

Finding the Fourth Proportional to 129,721.60, 194,438.40 and 50,809.60

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Solution

The fourth proportional to 129,721.60, 194,438.40 and 50,809.60 is: 76,158.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,721.60 : 194,438.40 = 50,809.60 : x
  2. Step 2: Convert to fraction form
    129,721.60/194,438.40 = 50,809.60/x
  3. Step 3: Cross multiply
    129,721.60x = 194,438.40 × 50,809.60
  4. Step 4: Simplify right side
    129,721.60x = 9,879,337,328.64
  5. Step 5: Solve for x
    x = 9,879,337,328.64/129,721.60
  6. Step 6: Final answer
    x = 76,158.00

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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.