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Finding the Fourth Proportional to 108,749.79, 163,188.18 and 45,564.51

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Solution

The fourth proportional to 108,749.79, 163,188.18 and 45,564.51 is: 68,373.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,749.79 : 163,188.18 = 45,564.51 : x
  2. Step 2: Convert to fraction form
    108,749.79/163,188.18 = 45,564.51/x
  3. Step 3: Cross multiply
    108,749.79x = 163,188.18 × 45,564.51
  4. Step 4: Simplify right side
    108,749.79x = 7,435,589,459.49
  5. Step 5: Solve for x
    x = 7,435,589,459.49/108,749.79
  6. Step 6: Final answer
    x = 68,373.37

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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.