Home / 161,212.73-222,404.55-100,678.28

Finding the Fourth Proportional to 161,212.73, 222,404.55 and 100,678.28

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Solution

The fourth proportional to 161,212.73, 222,404.55 and 100,678.28 is: 138,892.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,212.73 : 222,404.55 = 100,678.28 : x
  2. Step 2: Convert to fraction form
    161,212.73/222,404.55 = 100,678.28/x
  3. Step 3: Cross multiply
    161,212.73x = 222,404.55 × 100,678.28
  4. Step 4: Simplify right side
    161,212.73x = 22,391,307,253.86
  5. Step 5: Solve for x
    x = 22,391,307,253.86/161,212.73
  6. Step 6: Final answer
    x = 138,892.92

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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.