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Finding the Fourth Proportional to 160,490.21, 221,476.43 and 88,870.21

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Solution

The fourth proportional to 160,490.21, 221,476.43 and 88,870.21 is: 122,640.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,490.21 : 221,476.43 = 88,870.21 : x
  2. Step 2: Convert to fraction form
    160,490.21/221,476.43 = 88,870.21/x
  3. Step 3: Cross multiply
    160,490.21x = 221,476.43 × 88,870.21
  4. Step 4: Simplify right side
    160,490.21x = 19,682,656,512.63
  5. Step 5: Solve for x
    x = 19,682,656,512.63/160,490.21
  6. Step 6: Final answer
    x = 122,640.86

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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.