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Finding the Fourth Proportional to 160,630.10, 221,685.09 and 89,033.30

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Solution

The fourth proportional to 160,630.10, 221,685.09 and 89,033.30 is: 122,874.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,630.10 : 221,685.09 = 89,033.30 : x
  2. Step 2: Convert to fraction form
    160,630.10/221,685.09 = 89,033.30/x
  3. Step 3: Cross multiply
    160,630.10x = 221,685.09 × 89,033.30
  4. Step 4: Simplify right side
    160,630.10x = 19,737,355,123.50
  5. Step 5: Solve for x
    x = 19,737,355,123.50/160,630.10
  6. Step 6: Final answer
    x = 122,874.57

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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.