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Finding the Fourth Proportional to 161,285.70, 222,581.85 and 89,666.91

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Solution

The fourth proportional to 161,285.70, 222,581.85 and 89,666.91 is: 123,744.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,285.70 : 222,581.85 = 89,666.91 : x
  2. Step 2: Convert to fraction form
    161,285.70/222,581.85 = 89,666.91/x
  3. Step 3: Cross multiply
    161,285.70x = 222,581.85 × 89,666.91
  4. Step 4: Simplify right side
    161,285.70x = 19,958,226,711.58
  5. Step 5: Solve for x
    x = 19,958,226,711.58/161,285.70
  6. Step 6: Final answer
    x = 123,744.55

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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.