Home / 131,059.40-196,589.10-128,872.40

Finding the Fourth Proportional to 131,059.40, 196,589.10 and 128,872.40

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Solution

The fourth proportional to 131,059.40, 196,589.10 and 128,872.40 is: 193,308.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,059.40 : 196,589.10 = 128,872.40 : x
  2. Step 2: Convert to fraction form
    131,059.40/196,589.10 = 128,872.40/x
  3. Step 3: Cross multiply
    131,059.40x = 196,589.10 × 128,872.40
  4. Step 4: Simplify right side
    131,059.40x = 25,334,909,130.84
  5. Step 5: Solve for x
    x = 25,334,909,130.84/131,059.40
  6. Step 6: Final answer
    x = 193,308.60

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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.