Home / 130,438.80-195,512.40-55,546.20

Finding the Fourth Proportional to 130,438.80, 195,512.40 and 55,546.20

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Solution

The fourth proportional to 130,438.80, 195,512.40 and 55,546.20 is: 83,257.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,438.80 : 195,512.40 = 55,546.20 : x
  2. Step 2: Convert to fraction form
    130,438.80/195,512.40 = 55,546.20/x
  3. Step 3: Cross multiply
    130,438.80x = 195,512.40 × 55,546.20
  4. Step 4: Simplify right side
    130,438.80x = 10,859,970,872.88
  5. Step 5: Solve for x
    x = 10,859,970,872.88/130,438.80
  6. Step 6: Final answer
    x = 83,257.21

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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.