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Finding the Fourth Proportional to 108,510.60, 149,644.71 and 74,459.01

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Solution

The fourth proportional to 108,510.60, 149,644.71 and 74,459.01 is: 102,684.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,510.60 : 149,644.71 = 74,459.01 : x
  2. Step 2: Convert to fraction form
    108,510.60/149,644.71 = 74,459.01/x
  3. Step 3: Cross multiply
    108,510.60x = 149,644.71 × 74,459.01
  4. Step 4: Simplify right side
    108,510.60x = 11,142,396,958.34
  5. Step 5: Solve for x
    x = 11,142,396,958.34/108,510.60
  6. Step 6: Final answer
    x = 102,684.87

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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.