Home / 143,840.68-198,418.85-90,032.28

Finding the Fourth Proportional to 143,840.68, 198,418.85 and 90,032.28

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Solution

The fourth proportional to 143,840.68, 198,418.85 and 90,032.28 is: 124,193.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,840.68 : 198,418.85 = 90,032.28 : x
  2. Step 2: Convert to fraction form
    143,840.68/198,418.85 = 90,032.28/x
  3. Step 3: Cross multiply
    143,840.68x = 198,418.85 × 90,032.28
  4. Step 4: Simplify right side
    143,840.68x = 17,864,100,603.87
  5. Step 5: Solve for x
    x = 17,864,100,603.87/143,840.68
  6. Step 6: Final answer
    x = 124,193.66

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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.