Home / 161,387.98-222,689.73-89,767.78

Finding the Fourth Proportional to 161,387.98, 222,689.73 and 89,767.78

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Solution

The fourth proportional to 161,387.98, 222,689.73 and 89,767.78 is: 123,865.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,387.98 : 222,689.73 = 89,767.78 : x
  2. Step 2: Convert to fraction form
    161,387.98/222,689.73 = 89,767.78/x
  3. Step 3: Cross multiply
    161,387.98x = 222,689.73 × 89,767.78
  4. Step 4: Simplify right side
    161,387.98x = 19,990,362,690.90
  5. Step 5: Solve for x
    x = 19,990,362,690.90/161,387.98
  6. Step 6: Final answer
    x = 123,865.25

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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.