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Finding the Fourth Proportional to 117,765.87, 162,515.70 and 64,051.32

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Solution

The fourth proportional to 117,765.87, 162,515.70 and 64,051.32 is: 88,390.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,765.87 : 162,515.70 = 64,051.32 : x
  2. Step 2: Convert to fraction form
    117,765.87/162,515.70 = 64,051.32/x
  3. Step 3: Cross multiply
    117,765.87x = 162,515.70 × 64,051.32
  4. Step 4: Simplify right side
    117,765.87x = 10,409,345,105.72
  5. Step 5: Solve for x
    x = 10,409,345,105.72/117,765.87
  6. Step 6: Final answer
    x = 88,390.17

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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.