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Finding the Fourth Proportional to 130,642.70, 195,672.45 and 100,826.60

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Solution

The fourth proportional to 130,642.70, 195,672.45 and 100,826.60 is: 151,014.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,642.70 : 195,672.45 = 100,826.60 : x
  2. Step 2: Convert to fraction form
    130,642.70/195,672.45 = 100,826.60/x
  3. Step 3: Cross multiply
    130,642.70x = 195,672.45 × 100,826.60
  4. Step 4: Simplify right side
    130,642.70x = 19,728,987,847.17
  5. Step 5: Solve for x
    x = 19,728,987,847.17/130,642.70
  6. Step 6: Final answer
    x = 151,014.85

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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.