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Finding the Fourth Proportional to 145,305.90, 217,958.58 and 40,124.58

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Solution

The fourth proportional to 145,305.90, 217,958.58 and 40,124.58 is: 60,186.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,305.90 : 217,958.58 = 40,124.58 : x
  2. Step 2: Convert to fraction form
    145,305.90/217,958.58 = 40,124.58/x
  3. Step 3: Cross multiply
    145,305.90x = 217,958.58 × 40,124.58
  4. Step 4: Simplify right side
    145,305.90x = 8,745,496,479.90
  5. Step 5: Solve for x
    x = 8,745,496,479.90/145,305.90
  6. Step 6: Final answer
    x = 60,186.80

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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.