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Finding the Fourth Proportional to 161,109.60, 241,664.40 and 72,405.60

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Solution

The fourth proportional to 161,109.60, 241,664.40 and 72,405.60 is: 108,608.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,109.60 : 241,664.40 = 72,405.60 : x
  2. Step 2: Convert to fraction form
    161,109.60/241,664.40 = 72,405.60/x
  3. Step 3: Cross multiply
    161,109.60x = 241,664.40 × 72,405.60
  4. Step 4: Simplify right side
    161,109.60x = 17,497,855,880.64
  5. Step 5: Solve for x
    x = 17,497,855,880.64/161,109.60
  6. Step 6: Final answer
    x = 108,608.40

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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.