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Finding the Fourth Proportional to 117,473.88, 162,111.54 and 66,485.70

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Solution

The fourth proportional to 117,473.88, 162,111.54 and 66,485.70 is: 91,748.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,473.88 : 162,111.54 = 66,485.70 : x
  2. Step 2: Convert to fraction form
    117,473.88/162,111.54 = 66,485.70/x
  3. Step 3: Cross multiply
    117,473.88x = 162,111.54 × 66,485.70
  4. Step 4: Simplify right side
    117,473.88x = 10,778,099,214.98
  5. Step 5: Solve for x
    x = 10,778,099,214.98/117,473.88
  6. Step 6: Final answer
    x = 91,748.90

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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.