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Finding the Fourth Proportional to 106,809.62, 147,396.60 and 63,808.64

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Solution

The fourth proportional to 106,809.62, 147,396.60 and 63,808.64 is: 88,055.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,809.62 : 147,396.60 = 63,808.64 : x
  2. Step 2: Convert to fraction form
    106,809.62/147,396.60 = 63,808.64/x
  3. Step 3: Cross multiply
    106,809.62x = 147,396.60 × 63,808.64
  4. Step 4: Simplify right side
    106,809.62x = 9,405,176,586.62
  5. Step 5: Solve for x
    x = 9,405,176,586.62/106,809.62
  6. Step 6: Final answer
    x = 88,055.52

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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.