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Finding the Fourth Proportional to 160,689.92, 221,762.76 and 89,072.96

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Solution

The fourth proportional to 160,689.92, 221,762.76 and 89,072.96 is: 122,926.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,689.92 : 221,762.76 = 89,072.96 : x
  2. Step 2: Convert to fraction form
    160,689.92/221,762.76 = 89,072.96/x
  3. Step 3: Cross multiply
    160,689.92x = 221,762.76 × 89,072.96
  4. Step 4: Simplify right side
    160,689.92x = 19,753,065,450.97
  5. Step 5: Solve for x
    x = 19,753,065,450.97/160,689.92
  6. Step 6: Final answer
    x = 122,926.60

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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.