Home / 130,150.80-195,456.60-100,640.40

Finding the Fourth Proportional to 130,150.80, 195,456.60 and 100,640.40

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Solution

The fourth proportional to 130,150.80, 195,456.60 and 100,640.40 is: 151,138.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,150.80 : 195,456.60 = 100,640.40 : x
  2. Step 2: Convert to fraction form
    130,150.80/195,456.60 = 100,640.40/x
  3. Step 3: Cross multiply
    130,150.80x = 195,456.60 × 100,640.40
  4. Step 4: Simplify right side
    130,150.80x = 19,670,830,406.64
  5. Step 5: Solve for x
    x = 19,670,830,406.64/130,150.80
  6. Step 6: Final answer
    x = 151,138.76

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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.