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Finding the Fourth Proportional to 107,911.60, 161,905.80 and 104,071.60

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Solution

The fourth proportional to 107,911.60, 161,905.80 and 104,071.60 is: 156,144.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,911.60 : 161,905.80 = 104,071.60 : x
  2. Step 2: Convert to fraction form
    107,911.60/161,905.80 = 104,071.60/x
  3. Step 3: Cross multiply
    107,911.60x = 161,905.80 × 104,071.60
  4. Step 4: Simplify right side
    107,911.60x = 16,849,795,655.28
  5. Step 5: Solve for x
    x = 16,849,795,655.28/107,911.60
  6. Step 6: Final answer
    x = 156,144.43

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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.