Home / 143,758.26-198,511.16-90,135.45

Finding the Fourth Proportional to 143,758.26, 198,511.16 and 90,135.45

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Solution

The fourth proportional to 143,758.26, 198,511.16 and 90,135.45 is: 124,465.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,758.26 : 198,511.16 = 90,135.45 : x
  2. Step 2: Convert to fraction form
    143,758.26/198,511.16 = 90,135.45/x
  3. Step 3: Cross multiply
    143,758.26x = 198,511.16 × 90,135.45
  4. Step 4: Simplify right side
    143,758.26x = 17,892,892,285.94
  5. Step 5: Solve for x
    x = 17,892,892,285.94/143,758.26
  6. Step 6: Final answer
    x = 124,465.14

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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.