Home / 142,899.87-197,211.74-79,243.59

Finding the Fourth Proportional to 142,899.87, 197,211.74 and 79,243.59

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Solution

The fourth proportional to 142,899.87, 197,211.74 and 79,243.59 is: 109,361.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,899.87 : 197,211.74 = 79,243.59 : x
  2. Step 2: Convert to fraction form
    142,899.87/197,211.74 = 79,243.59/x
  3. Step 3: Cross multiply
    142,899.87x = 197,211.74 × 79,243.59
  4. Step 4: Simplify right side
    142,899.87x = 15,627,765,871.53
  5. Step 5: Solve for x
    x = 15,627,765,871.53/142,899.87
  6. Step 6: Final answer
    x = 109,361.65

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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.