Home / 130,016.90-194,879.55-66,812.60

Finding the Fourth Proportional to 130,016.90, 194,879.55 and 66,812.60

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Solution

The fourth proportional to 130,016.90, 194,879.55 and 66,812.60 is: 100,143.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,016.90 : 194,879.55 = 66,812.60 : x
  2. Step 2: Convert to fraction form
    130,016.90/194,879.55 = 66,812.60/x
  3. Step 3: Cross multiply
    130,016.90x = 194,879.55 × 66,812.60
  4. Step 4: Simplify right side
    130,016.90x = 13,020,409,422.33
  5. Step 5: Solve for x
    x = 13,020,409,422.33/130,016.90
  6. Step 6: Final answer
    x = 100,143.98

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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.