Home / 142,016.81-195,974.28-78,355.04

Finding the Fourth Proportional to 142,016.81, 195,974.28 and 78,355.04

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Solution

The fourth proportional to 142,016.81, 195,974.28 and 78,355.04 is: 108,125.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,016.81 : 195,974.28 = 78,355.04 : x
  2. Step 2: Convert to fraction form
    142,016.81/195,974.28 = 78,355.04/x
  3. Step 3: Cross multiply
    142,016.81x = 195,974.28 × 78,355.04
  4. Step 4: Simplify right side
    142,016.81x = 15,355,571,568.50
  5. Step 5: Solve for x
    x = 15,355,571,568.50/142,016.81
  6. Step 6: Final answer
    x = 108,125.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.