Home / 281,961.77-389,106.47-161,140.55

Finding the Fourth Proportional to 281,961.77, 389,106.47 and 161,140.55

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Solution

The fourth proportional to 281,961.77, 389,106.47 and 161,140.55 is: 222,373.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,961.77 : 389,106.47 = 161,140.55 : x
  2. Step 2: Convert to fraction form
    281,961.77/389,106.47 = 161,140.55/x
  3. Step 3: Cross multiply
    281,961.77x = 389,106.47 × 161,140.55
  4. Step 4: Simplify right side
    281,961.77x = 62,700,829,778.66
  5. Step 5: Solve for x
    x = 62,700,829,778.66/281,961.77
  6. Step 6: Final answer
    x = 222,373.51

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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.