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Finding the Fourth Proportional to 160,491, 221,474.85 and 88,869.48

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Solution

The fourth proportional to 160,491, 221,474.85 and 88,869.48 is: 122,638.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,491 : 221,474.85 = 88,869.48 : x
  2. Step 2: Convert to fraction form
    160,491/221,474.85 = 88,869.48/x
  3. Step 3: Cross multiply
    160,491x = 221,474.85 × 88,869.48
  4. Step 4: Simplify right side
    160,491x = 19,682,355,528.44
  5. Step 5: Solve for x
    x = 19,682,355,528.44/160,491
  6. Step 6: Final answer
    x = 122,638.38

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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.