Home / 129,985.20-194,686.20-127,069.20

Finding the Fourth Proportional to 129,985.20, 194,686.20 and 127,069.20

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Solution

The fourth proportional to 129,985.20, 194,686.20 and 127,069.20 is: 190,318.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,985.20 : 194,686.20 = 127,069.20 : x
  2. Step 2: Convert to fraction form
    129,985.20/194,686.20 = 127,069.20/x
  3. Step 3: Cross multiply
    129,985.20x = 194,686.20 × 127,069.20
  4. Step 4: Simplify right side
    129,985.20x = 24,738,619,685.04
  5. Step 5: Solve for x
    x = 24,738,619,685.04/129,985.20
  6. Step 6: Final answer
    x = 190,318.74

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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.