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Finding the Fourth Proportional to 163,772.45, 245,658.68 and 45,443.81

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Solution

The fourth proportional to 163,772.45, 245,658.68 and 45,443.81 is: 68,165.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,772.45 : 245,658.68 = 45,443.81 : x
  2. Step 2: Convert to fraction form
    163,772.45/245,658.68 = 45,443.81/x
  3. Step 3: Cross multiply
    163,772.45x = 245,658.68 × 45,443.81
  4. Step 4: Simplify right side
    163,772.45x = 11,163,666,151.55
  5. Step 5: Solve for x
    x = 11,163,666,151.55/163,772.45
  6. Step 6: Final answer
    x = 68,165.72

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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.