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Finding the Fourth Proportional to 111,661.70, 167,200.95 and 72,004.10

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Solution

The fourth proportional to 111,661.70, 167,200.95 and 72,004.10 is: 107,818.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,661.70 : 167,200.95 = 72,004.10 : x
  2. Step 2: Convert to fraction form
    111,661.70/167,200.95 = 72,004.10/x
  3. Step 3: Cross multiply
    111,661.70x = 167,200.95 × 72,004.10
  4. Step 4: Simplify right side
    111,661.70x = 12,039,153,923.90
  5. Step 5: Solve for x
    x = 12,039,153,923.90/111,661.70
  6. Step 6: Final answer
    x = 107,818.11

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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.