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Finding the Fourth Proportional to 111,657.40, 167,291.70 and 72,194.20

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Solution

The fourth proportional to 111,657.40, 167,291.70 and 72,194.20 is: 108,165.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,657.40 : 167,291.70 = 72,194.20 : x
  2. Step 2: Convert to fraction form
    111,657.40/167,291.70 = 72,194.20/x
  3. Step 3: Cross multiply
    111,657.40x = 167,291.70 × 72,194.20
  4. Step 4: Simplify right side
    111,657.40x = 12,077,490,448.14
  5. Step 5: Solve for x
    x = 12,077,490,448.14/111,657.40
  6. Step 6: Final answer
    x = 108,165.61

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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.