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Finding the Fourth Proportional to 145,382.40, 218,073.60 and 113,889.60

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Solution

The fourth proportional to 145,382.40, 218,073.60 and 113,889.60 is: 170,834.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,382.40 : 218,073.60 = 113,889.60 : x
  2. Step 2: Convert to fraction form
    145,382.40/218,073.60 = 113,889.60/x
  3. Step 3: Cross multiply
    145,382.40x = 218,073.60 × 113,889.60
  4. Step 4: Simplify right side
    145,382.40x = 24,836,315,074.56
  5. Step 5: Solve for x
    x = 24,836,315,074.56/145,382.40
  6. Step 6: Final answer
    x = 170,834.40

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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.