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Finding the Fourth Proportional to 117,628.40, 162,328.32 and 63,913.84

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Solution

The fourth proportional to 117,628.40, 162,328.32 and 63,913.84 is: 88,201.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,628.40 : 162,328.32 = 63,913.84 : x
  2. Step 2: Convert to fraction form
    117,628.40/162,328.32 = 63,913.84/x
  3. Step 3: Cross multiply
    117,628.40x = 162,328.32 × 63,913.84
  4. Step 4: Simplify right side
    117,628.40x = 10,375,026,271.95
  5. Step 5: Solve for x
    x = 10,375,026,271.95/117,628.40
  6. Step 6: Final answer
    x = 88,201.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.