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Finding the Fourth Proportional to 160,647.72, 221,701.80 and 89,028.12

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Solution

The fourth proportional to 160,647.72, 221,701.80 and 89,028.12 is: 122,863.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,647.72 : 221,701.80 = 89,028.12 : x
  2. Step 2: Convert to fraction form
    160,647.72/221,701.80 = 89,028.12/x
  3. Step 3: Cross multiply
    160,647.72x = 221,701.80 × 89,028.12
  4. Step 4: Simplify right side
    160,647.72x = 19,737,694,454.62
  5. Step 5: Solve for x
    x = 19,737,694,454.62/160,647.72
  6. Step 6: Final answer
    x = 122,863.21

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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.