Home / 130,111.10-195,166.65-80,028.80

Finding the Fourth Proportional to 130,111.10, 195,166.65 and 80,028.80

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Solution

The fourth proportional to 130,111.10, 195,166.65 and 80,028.80 is: 120,043.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,111.10 : 195,166.65 = 80,028.80 : x
  2. Step 2: Convert to fraction form
    130,111.10/195,166.65 = 80,028.80/x
  3. Step 3: Cross multiply
    130,111.10x = 195,166.65 × 80,028.80
  4. Step 4: Simplify right side
    130,111.10x = 15,618,952,799.52
  5. Step 5: Solve for x
    x = 15,618,952,799.52/130,111.10
  6. Step 6: Final answer
    x = 120,043.20

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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.