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Finding the Fourth Proportional to 160,247.88, 221,133.11 and 87,636.33

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Solution

The fourth proportional to 160,247.88, 221,133.11 and 87,636.33 is: 120,933.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,247.88 : 221,133.11 = 87,636.33 : x
  2. Step 2: Convert to fraction form
    160,247.88/221,133.11 = 87,636.33/x
  3. Step 3: Cross multiply
    160,247.88x = 221,133.11 × 87,636.33
  4. Step 4: Simplify right side
    160,247.88x = 19,379,293,763.70
  5. Step 5: Solve for x
    x = 19,379,293,763.70/160,247.88
  6. Step 6: Final answer
    x = 120,933.23

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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.