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Finding the Fourth Proportional to 160,137.69, 220,990.06 and 87,540.90

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Solution

The fourth proportional to 160,137.69, 220,990.06 and 87,540.90 is: 120,806.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,137.69 : 220,990.06 = 87,540.90 : x
  2. Step 2: Convert to fraction form
    160,137.69/220,990.06 = 87,540.90/x
  3. Step 3: Cross multiply
    160,137.69x = 220,990.06 × 87,540.90
  4. Step 4: Simplify right side
    160,137.69x = 19,345,667,695.89
  5. Step 5: Solve for x
    x = 19,345,667,695.89/160,137.69
  6. Step 6: Final answer
    x = 120,806.46

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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.