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Finding the Fourth Proportional to 145,166.68, 217,749.92 and 45,335.43

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Solution

The fourth proportional to 145,166.68, 217,749.92 and 45,335.43 is: 68,003.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,166.68 : 217,749.92 = 45,335.43 : x
  2. Step 2: Convert to fraction form
    145,166.68/217,749.92 = 45,335.43/x
  3. Step 3: Cross multiply
    145,166.68x = 217,749.92 × 45,335.43
  4. Step 4: Simplify right side
    145,166.68x = 9,871,786,284.00
  5. Step 5: Solve for x
    x = 9,871,786,284.00/145,166.68
  6. Step 6: Final answer
    x = 68,003.11

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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.