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Finding the Fourth Proportional to 161,038.80, 241,817.40 and 121,640.40

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Solution

The fourth proportional to 161,038.80, 241,817.40 and 121,640.40 is: 182,656.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,038.80 : 241,817.40 = 121,640.40 : x
  2. Step 2: Convert to fraction form
    161,038.80/241,817.40 = 121,640.40/x
  3. Step 3: Cross multiply
    161,038.80x = 241,817.40 × 121,640.40
  4. Step 4: Simplify right side
    161,038.80x = 29,414,765,262.96
  5. Step 5: Solve for x
    x = 29,414,765,262.96/161,038.80
  6. Step 6: Final answer
    x = 182,656.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.