Home / 143,438.01-197,948.24-78,908.95

Finding the Fourth Proportional to 143,438.01, 197,948.24 and 78,908.95

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Solution

The fourth proportional to 143,438.01, 197,948.24 and 78,908.95 is: 108,896.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,438.01 : 197,948.24 = 78,908.95 : x
  2. Step 2: Convert to fraction form
    143,438.01/197,948.24 = 78,908.95/x
  3. Step 3: Cross multiply
    143,438.01x = 197,948.24 × 78,908.95
  4. Step 4: Simplify right side
    143,438.01x = 15,619,887,772.75
  5. Step 5: Solve for x
    x = 15,619,887,772.75/143,438.01
  6. Step 6: Final answer
    x = 108,896.43

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1.5x scale

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.