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Finding the Fourth Proportional to 161,687.87, 221,513.42 and 155,627.41

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Solution

The fourth proportional to 161,687.87, 221,513.42 and 155,627.41 is: 213,210.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,687.87 : 221,513.42 = 155,627.41 : x
  2. Step 2: Convert to fraction form
    161,687.87/221,513.42 = 155,627.41/x
  3. Step 3: Cross multiply
    161,687.87x = 221,513.42 × 155,627.41
  4. Step 4: Simplify right side
    161,687.87x = 34,473,559,834.84
  5. Step 5: Solve for x
    x = 34,473,559,834.84/161,687.87
  6. Step 6: Final answer
    x = 213,210.55

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.