Home / 130,390.40-195,585.60-129,612.80

Finding the Fourth Proportional to 130,390.40, 195,585.60 and 129,612.80

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Solution

The fourth proportional to 130,390.40, 195,585.60 and 129,612.80 is: 194,419.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,390.40 : 195,585.60 = 129,612.80 : x
  2. Step 2: Convert to fraction form
    130,390.40/195,585.60 = 129,612.80/x
  3. Step 3: Cross multiply
    130,390.40x = 195,585.60 × 129,612.80
  4. Step 4: Simplify right side
    130,390.40x = 25,350,397,255.68
  5. Step 5: Solve for x
    x = 25,350,397,255.68/130,390.40
  6. Step 6: Final answer
    x = 194,419.20

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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.