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Finding the Fourth Proportional to 161,078.40, 222,317.16 and 93,085.98

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Solution

The fourth proportional to 161,078.40, 222,317.16 and 93,085.98 is: 128,475.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,078.40 : 222,317.16 = 93,085.98 : x
  2. Step 2: Convert to fraction form
    161,078.40/222,317.16 = 93,085.98/x
  3. Step 3: Cross multiply
    161,078.40x = 222,317.16 × 93,085.98
  4. Step 4: Simplify right side
    161,078.40x = 20,694,610,709.42
  5. Step 5: Solve for x
    x = 20,694,610,709.42/161,078.40
  6. Step 6: Final answer
    x = 128,475.39

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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.