Home / 130,680.80-195,632.40-86,357.60

Finding the Fourth Proportional to 130,680.80, 195,632.40 and 86,357.60

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Solution

The fourth proportional to 130,680.80, 195,632.40 and 86,357.60 is: 129,279.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,680.80 : 195,632.40 = 86,357.60 : x
  2. Step 2: Convert to fraction form
    130,680.80/195,632.40 = 86,357.60/x
  3. Step 3: Cross multiply
    130,680.80x = 195,632.40 × 86,357.60
  4. Step 4: Simplify right side
    130,680.80x = 16,894,344,546.24
  5. Step 5: Solve for x
    x = 16,894,344,546.24/130,680.80
  6. Step 6: Final answer
    x = 129,279.47

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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.