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Finding the Fourth Proportional to 161,539.63, 222,920.79 and 89,918.08

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Solution

The fourth proportional to 161,539.63, 222,920.79 and 89,918.08 is: 124,084.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,539.63 : 222,920.79 = 89,918.08 : x
  2. Step 2: Convert to fraction form
    161,539.63/222,920.79 = 89,918.08/x
  3. Step 3: Cross multiply
    161,539.63x = 222,920.79 × 89,918.08
  4. Step 4: Simplify right side
    161,539.63x = 20,044,609,428.88
  5. Step 5: Solve for x
    x = 20,044,609,428.88/161,539.63
  6. Step 6: Final answer
    x = 124,084.78

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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.