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Finding the Fourth Proportional to 160,641.92, 221,682.72 and 89,020.40

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Solution

The fourth proportional to 160,641.92, 221,682.72 and 89,020.40 is: 122,846.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,641.92 : 221,682.72 = 89,020.40 : x
  2. Step 2: Convert to fraction form
    160,641.92/221,682.72 = 89,020.40/x
  3. Step 3: Cross multiply
    160,641.92x = 221,682.72 × 89,020.40
  4. Step 4: Simplify right side
    160,641.92x = 19,734,284,407.49
  5. Step 5: Solve for x
    x = 19,734,284,407.49/160,641.92
  6. Step 6: Final answer
    x = 122,846.42

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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.