Home / 161,128.40-222,349.65-89,512.79

Finding the Fourth Proportional to 161,128.40, 222,349.65 and 89,512.79

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Solution

The fourth proportional to 161,128.40, 222,349.65 and 89,512.79 is: 123,523.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,128.40 : 222,349.65 = 89,512.79 : x
  2. Step 2: Convert to fraction form
    161,128.40/222,349.65 = 89,512.79/x
  3. Step 3: Cross multiply
    161,128.40x = 222,349.65 × 89,512.79
  4. Step 4: Simplify right side
    161,128.40x = 19,903,138,082.90
  5. Step 5: Solve for x
    x = 19,903,138,082.90/161,128.40
  6. Step 6: Final answer
    x = 123,523.46

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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.