Home / 143,038.56-197,395.36-79,380.48

Finding the Fourth Proportional to 143,038.56, 197,395.36 and 79,380.48

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Solution

The fourth proportional to 143,038.56, 197,395.36 and 79,380.48 is: 109,546.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,038.56 : 197,395.36 = 79,380.48 : x
  2. Step 2: Convert to fraction form
    143,038.56/197,395.36 = 79,380.48/x
  3. Step 3: Cross multiply
    143,038.56x = 197,395.36 × 79,380.48
  4. Step 4: Simplify right side
    143,038.56x = 15,669,338,426.57
  5. Step 5: Solve for x
    x = 15,669,338,426.57/143,038.56
  6. Step 6: Final answer
    x = 109,546.25

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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.