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Finding the Fourth Proportional to 145,596.87, 218,416.77 and 74,559.65

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Solution

The fourth proportional to 145,596.87, 218,416.77 and 74,559.65 is: 111,850.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,596.87 : 218,416.77 = 74,559.65 : x
  2. Step 2: Convert to fraction form
    145,596.87/218,416.77 = 74,559.65/x
  3. Step 3: Cross multiply
    145,596.87x = 218,416.77 × 74,559.65
  4. Step 4: Simplify right side
    145,596.87x = 16,285,076,833.25
  5. Step 5: Solve for x
    x = 16,285,076,833.25/145,596.87
  6. Step 6: Final answer
    x = 111,850.46

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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.