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Finding the Fourth Proportional to 108,122.60, 161,795.10 and 73,130.60

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Solution

The fourth proportional to 108,122.60, 161,795.10 and 73,130.60 is: 109,432.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,122.60 : 161,795.10 = 73,130.60 : x
  2. Step 2: Convert to fraction form
    108,122.60/161,795.10 = 73,130.60/x
  3. Step 3: Cross multiply
    108,122.60x = 161,795.10 × 73,130.60
  4. Step 4: Simplify right side
    108,122.60x = 11,832,172,740.06
  5. Step 5: Solve for x
    x = 11,832,172,740.06/108,122.60
  6. Step 6: Final answer
    x = 109,432.93

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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.