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Finding the Fourth Proportional to 161,299.50, 222,593.31 and 90,643.50

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Solution

The fourth proportional to 161,299.50, 222,593.31 and 90,643.50 is: 125,088.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,299.50 : 222,593.31 = 90,643.50 : x
  2. Step 2: Convert to fraction form
    161,299.50/222,593.31 = 90,643.50/x
  3. Step 3: Cross multiply
    161,299.50x = 222,593.31 × 90,643.50
  4. Step 4: Simplify right side
    161,299.50x = 20,176,636,694.99
  5. Step 5: Solve for x
    x = 20,176,636,694.99/161,299.50
  6. Step 6: Final answer
    x = 125,088.03

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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.