Home / 161,083.37-222,406.25-100,681.15

Finding the Fourth Proportional to 161,083.37, 222,406.25 and 100,681.15

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Solution

The fourth proportional to 161,083.37, 222,406.25 and 100,681.15 is: 139,009.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,083.37 : 222,406.25 = 100,681.15 : x
  2. Step 2: Convert to fraction form
    161,083.37/222,406.25 = 100,681.15/x
  3. Step 3: Cross multiply
    161,083.37x = 222,406.25 × 100,681.15
  4. Step 4: Simplify right side
    161,083.37x = 22,392,115,401.75
  5. Step 5: Solve for x
    x = 22,392,115,401.75/161,083.37
  6. Step 6: Final answer
    x = 139,009.48

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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.