Home / 161,138.40-222,406.56-89,543.04

Finding the Fourth Proportional to 161,138.40, 222,406.56 and 89,543.04

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Solution

The fourth proportional to 161,138.40, 222,406.56 and 89,543.04 is: 123,589.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,138.40 : 222,406.56 = 89,543.04 : x
  2. Step 2: Convert to fraction form
    161,138.40/222,406.56 = 89,543.04/x
  3. Step 3: Cross multiply
    161,138.40x = 222,406.56 × 89,543.04
  4. Step 4: Simplify right side
    161,138.40x = 19,914,959,498.34
  5. Step 5: Solve for x
    x = 19,914,959,498.34/161,138.40
  6. Step 6: Final answer
    x = 123,589.16

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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.