Home / 130,090.80-195,136.20-51,207.60

Finding the Fourth Proportional to 130,090.80, 195,136.20 and 51,207.60

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Solution

The fourth proportional to 130,090.80, 195,136.20 and 51,207.60 is: 76,811.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,090.80 : 195,136.20 = 51,207.60 : x
  2. Step 2: Convert to fraction form
    130,090.80/195,136.20 = 51,207.60/x
  3. Step 3: Cross multiply
    130,090.80x = 195,136.20 × 51,207.60
  4. Step 4: Simplify right side
    130,090.80x = 9,992,456,475.12
  5. Step 5: Solve for x
    x = 9,992,456,475.12/130,090.80
  6. Step 6: Final answer
    x = 76,811.40

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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.