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Finding the Fourth Proportional to 145,363.16, 218,042.58 and 40,179.80

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Solution

The fourth proportional to 145,363.16, 218,042.58 and 40,179.80 is: 60,269.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,363.16 : 218,042.58 = 40,179.80 : x
  2. Step 2: Convert to fraction form
    145,363.16/218,042.58 = 40,179.80/x
  3. Step 3: Cross multiply
    145,363.16x = 218,042.58 × 40,179.80
  4. Step 4: Simplify right side
    145,363.16x = 8,760,907,255.88
  5. Step 5: Solve for x
    x = 8,760,907,255.88/145,363.16
  6. Step 6: Final answer
    x = 60,269.10

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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.