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Finding the Fourth Proportional to 136,776.80, 204,698.40 and 114,615.20

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Solution

The fourth proportional to 136,776.80, 204,698.40 and 114,615.20 is: 171,531.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,776.80 : 204,698.40 = 114,615.20 : x
  2. Step 2: Convert to fraction form
    136,776.80/204,698.40 = 114,615.20/x
  3. Step 3: Cross multiply
    136,776.80x = 204,698.40 × 114,615.20
  4. Step 4: Simplify right side
    136,776.80x = 23,461,548,055.68
  5. Step 5: Solve for x
    x = 23,461,548,055.68/136,776.80
  6. Step 6: Final answer
    x = 171,531.63

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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.