Home / 142,915.30-197,210.19-79,252.90

Finding the Fourth Proportional to 142,915.30, 197,210.19 and 79,252.90

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Solution

The fourth proportional to 142,915.30, 197,210.19 and 79,252.90 is: 109,361.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,915.30 : 197,210.19 = 79,252.90 : x
  2. Step 2: Convert to fraction form
    142,915.30/197,210.19 = 79,252.90/x
  3. Step 3: Cross multiply
    142,915.30x = 197,210.19 × 79,252.90
  4. Step 4: Simplify right side
    142,915.30x = 15,629,479,467.05
  5. Step 5: Solve for x
    x = 15,629,479,467.05/142,915.30
  6. Step 6: Final answer
    x = 109,361.84

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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.