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Finding the Fourth Proportional to 143,485.52, 198,022.92 and 86,893.52

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Solution

The fourth proportional to 143,485.52, 198,022.92 and 86,893.52 is: 119,920.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,485.52 : 198,022.92 = 86,893.52 : x
  2. Step 2: Convert to fraction form
    143,485.52/198,022.92 = 86,893.52/x
  3. Step 3: Cross multiply
    143,485.52x = 198,022.92 × 86,893.52
  4. Step 4: Simplify right side
    143,485.52x = 17,206,908,559.48
  5. Step 5: Solve for x
    x = 17,206,908,559.48/143,485.52
  6. Step 6: Final answer
    x = 119,920.87

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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.