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Finding the Fourth Proportional to 143,765.82, 198,392.24 and 90,079.82

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Solution

The fourth proportional to 143,765.82, 198,392.24 and 90,079.82 is: 124,307.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,765.82 : 198,392.24 = 90,079.82 : x
  2. Step 2: Convert to fraction form
    143,765.82/198,392.24 = 90,079.82/x
  3. Step 3: Cross multiply
    143,765.82x = 198,392.24 × 90,079.82
  4. Step 4: Simplify right side
    143,765.82x = 17,871,137,268.60
  5. Step 5: Solve for x
    x = 17,871,137,268.60/143,765.82
  6. Step 6: Final answer
    x = 124,307.27

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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.