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Finding the Fourth Proportional to 117,987.84, 162,821.34 and 64,273.50

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Solution

The fourth proportional to 117,987.84, 162,821.34 and 64,273.50 is: 88,696.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,987.84 : 162,821.34 = 64,273.50 : x
  2. Step 2: Convert to fraction form
    117,987.84/162,821.34 = 64,273.50/x
  3. Step 3: Cross multiply
    117,987.84x = 162,821.34 × 64,273.50
  4. Step 4: Simplify right side
    117,987.84x = 10,465,097,396.49
  5. Step 5: Solve for x
    x = 10,465,097,396.49/117,987.84
  6. Step 6: Final answer
    x = 88,696.41

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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.