Home / 130,414.20-195,621.30-31,918.20

Finding the Fourth Proportional to 130,414.20, 195,621.30 and 31,918.20

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Solution

The fourth proportional to 130,414.20, 195,621.30 and 31,918.20 is: 47,877.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,414.20 : 195,621.30 = 31,918.20 : x
  2. Step 2: Convert to fraction form
    130,414.20/195,621.30 = 31,918.20/x
  3. Step 3: Cross multiply
    130,414.20x = 195,621.30 × 31,918.20
  4. Step 4: Simplify right side
    130,414.20x = 6,243,879,777.66
  5. Step 5: Solve for x
    x = 6,243,879,777.66/130,414.20
  6. Step 6: Final answer
    x = 47,877.30

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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.