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Finding the Fourth Proportional to 115,871.20, 173,806.80 and 45,741.40

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Solution

The fourth proportional to 115,871.20, 173,806.80 and 45,741.40 is: 68,612.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,871.20 : 173,806.80 = 45,741.40 : x
  2. Step 2: Convert to fraction form
    115,871.20/173,806.80 = 45,741.40/x
  3. Step 3: Cross multiply
    115,871.20x = 173,806.80 × 45,741.40
  4. Step 4: Simplify right side
    115,871.20x = 7,950,166,361.52
  5. Step 5: Solve for x
    x = 7,950,166,361.52/115,871.20
  6. Step 6: Final answer
    x = 68,612.10

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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.