Home / 161,139.20-222,373.28-89,520.32

Finding the Fourth Proportional to 161,139.20, 222,373.28 and 89,520.32

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Solution

The fourth proportional to 161,139.20, 222,373.28 and 89,520.32 is: 123,538.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,139.20 : 222,373.28 = 89,520.32 : x
  2. Step 2: Convert to fraction form
    161,139.20/222,373.28 = 89,520.32/x
  3. Step 3: Cross multiply
    161,139.20x = 222,373.28 × 89,520.32
  4. Step 4: Simplify right side
    161,139.20x = 19,906,927,185.05
  5. Step 5: Solve for x
    x = 19,906,927,185.05/161,139.20
  6. Step 6: Final answer
    x = 123,538.70

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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.