Home / 130,016.40-194,878.80-66,812.10

Finding the Fourth Proportional to 130,016.40, 194,878.80 and 66,812.10

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Solution

The fourth proportional to 130,016.40, 194,878.80 and 66,812.10 is: 100,143.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,016.40 : 194,878.80 = 66,812.10 : x
  2. Step 2: Convert to fraction form
    130,016.40/194,878.80 = 66,812.10/x
  3. Step 3: Cross multiply
    130,016.40x = 194,878.80 × 66,812.10
  4. Step 4: Simplify right side
    130,016.40x = 13,020,261,873.48
  5. Step 5: Solve for x
    x = 13,020,261,873.48/130,016.40
  6. Step 6: Final answer
    x = 100,143.23

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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.