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Finding the Fourth Proportional to 130,473.12, 195,776.64 and 63,912

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Solution

The fourth proportional to 130,473.12, 195,776.64 and 63,912 is: 95,900.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,473.12 : 195,776.64 = 63,912 : x
  2. Step 2: Convert to fraction form
    130,473.12/195,776.64 = 63,912/x
  3. Step 3: Cross multiply
    130,473.12x = 195,776.64 × 63,912
  4. Step 4: Simplify right side
    130,473.12x = 12,512,476,615.68
  5. Step 5: Solve for x
    x = 12,512,476,615.68/130,473.12
  6. Step 6: Final answer
    x = 95,900.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.