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Finding the Fourth Proportional to 111,796.80, 167,257.80 and 72,430.80

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Solution

The fourth proportional to 111,796.80, 167,257.80 and 72,430.80 is: 108,362.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,796.80 : 167,257.80 = 72,430.80 : x
  2. Step 2: Convert to fraction form
    111,796.80/167,257.80 = 72,430.80/x
  3. Step 3: Cross multiply
    111,796.80x = 167,257.80 × 72,430.80
  4. Step 4: Simplify right side
    111,796.80x = 12,114,616,260.24
  5. Step 5: Solve for x
    x = 12,114,616,260.24/111,796.80
  6. Step 6: Final answer
    x = 108,362.82

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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.