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Finding the Fourth Proportional to 117,860.63, 162,651.66 and 64,147.60

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Solution

The fourth proportional to 117,860.63, 162,651.66 and 64,147.60 is: 88,525.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,860.63 : 162,651.66 = 64,147.60 : x
  2. Step 2: Convert to fraction form
    117,860.63/162,651.66 = 64,147.60/x
  3. Step 3: Cross multiply
    117,860.63x = 162,651.66 × 64,147.60
  4. Step 4: Simplify right side
    117,860.63x = 10,433,712,811.76
  5. Step 5: Solve for x
    x = 10,433,712,811.76/117,860.63
  6. Step 6: Final answer
    x = 88,525.85

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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.