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Finding the Fourth Proportional to 117,808.75, 162,576.08 and 64,816.75

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Solution

The fourth proportional to 117,808.75, 162,576.08 and 64,816.75 is: 89,447.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,808.75 : 162,576.08 = 64,816.75 : x
  2. Step 2: Convert to fraction form
    117,808.75/162,576.08 = 64,816.75/x
  3. Step 3: Cross multiply
    117,808.75x = 162,576.08 × 64,816.75
  4. Step 4: Simplify right side
    117,808.75x = 10,537,653,133.34
  5. Step 5: Solve for x
    x = 10,537,653,133.34/117,808.75
  6. Step 6: Final answer
    x = 89,447.12

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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.