Home / 165,840.50-228,700.04-111,515.06

Finding the Fourth Proportional to 165,840.50, 228,700.04 and 111,515.06

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Solution

The fourth proportional to 165,840.50, 228,700.04 and 111,515.06 is: 153,783.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,840.50 : 228,700.04 = 111,515.06 : x
  2. Step 2: Convert to fraction form
    165,840.50/228,700.04 = 111,515.06/x
  3. Step 3: Cross multiply
    165,840.50x = 228,700.04 × 111,515.06
  4. Step 4: Simplify right side
    165,840.50x = 25,503,498,682.60
  5. Step 5: Solve for x
    x = 25,503,498,682.60/165,840.50
  6. Step 6: Final answer
    x = 153,783.30

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1.5x scale

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.