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Finding the Fourth Proportional to 143,745.93, 198,364.82 and 90,059.94

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Solution

The fourth proportional to 143,745.93, 198,364.82 and 90,059.94 is: 124,279.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,745.93 : 198,364.82 = 90,059.94 : x
  2. Step 2: Convert to fraction form
    143,745.93/198,364.82 = 90,059.94/x
  3. Step 3: Cross multiply
    143,745.93x = 198,364.82 × 90,059.94
  4. Step 4: Simplify right side
    143,745.93x = 17,864,723,337.01
  5. Step 5: Solve for x
    x = 17,864,723,337.01/143,745.93
  6. Step 6: Final answer
    x = 124,279.85

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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.