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Finding the Fourth Proportional to 111,656.80, 167,339.40 and 80,455.60

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Solution

The fourth proportional to 111,656.80, 167,339.40 and 80,455.60 is: 120,578.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,656.80 : 167,339.40 = 80,455.60 : x
  2. Step 2: Convert to fraction form
    111,656.80/167,339.40 = 80,455.60/x
  3. Step 3: Cross multiply
    111,656.80x = 167,339.40 × 80,455.60
  4. Step 4: Simplify right side
    111,656.80x = 13,463,391,830.64
  5. Step 5: Solve for x
    x = 13,463,391,830.64/111,656.80
  6. Step 6: Final answer
    x = 120,578.34

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1.5x scale

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.