Home / 161,100.09-222,320.16-89,486.78

Finding the Fourth Proportional to 161,100.09, 222,320.16 and 89,486.78

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Solution

The fourth proportional to 161,100.09, 222,320.16 and 89,486.78 is: 123,492.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,100.09 : 222,320.16 = 89,486.78 : x
  2. Step 2: Convert to fraction form
    161,100.09/222,320.16 = 89,486.78/x
  3. Step 3: Cross multiply
    161,100.09x = 222,320.16 × 89,486.78
  4. Step 4: Simplify right side
    161,100.09x = 19,894,714,135.88
  5. Step 5: Solve for x
    x = 19,894,714,135.88/161,100.09
  6. Step 6: Final answer
    x = 123,492.88

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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.