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Finding the Fourth Proportional to 163,687.76, 245,530.94 and 45,358.77

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Solution

The fourth proportional to 163,687.76, 245,530.94 and 45,358.77 is: 68,037.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,687.76 : 245,530.94 = 45,358.77 : x
  2. Step 2: Convert to fraction form
    163,687.76/245,530.94 = 45,358.77/x
  3. Step 3: Cross multiply
    163,687.76x = 245,530.94 × 45,358.77
  4. Step 4: Simplify right side
    163,687.76x = 11,136,981,208.55
  5. Step 5: Solve for x
    x = 11,136,981,208.55/163,687.76
  6. Step 6: Final answer
    x = 68,037.96

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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.