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Finding the Fourth Proportional to 145,493.77, 218,249.88 and 45,657.91

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Solution

The fourth proportional to 145,493.77, 218,249.88 and 45,657.91 is: 68,489.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,493.77 : 218,249.88 = 45,657.91 : x
  2. Step 2: Convert to fraction form
    145,493.77/218,249.88 = 45,657.91/x
  3. Step 3: Cross multiply
    145,493.77x = 218,249.88 × 45,657.91
  4. Step 4: Simplify right side
    145,493.77x = 9,964,833,378.55
  5. Step 5: Solve for x
    x = 9,964,833,378.55/145,493.77
  6. Step 6: Final answer
    x = 68,489.76

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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.