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Finding the Fourth Proportional to 111,385.60, 167,078.40 and 100,326.40

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Solution

The fourth proportional to 111,385.60, 167,078.40 and 100,326.40 is: 150,489.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,385.60 : 167,078.40 = 100,326.40 : x
  2. Step 2: Convert to fraction form
    111,385.60/167,078.40 = 100,326.40/x
  3. Step 3: Cross multiply
    111,385.60x = 167,078.40 × 100,326.40
  4. Step 4: Simplify right side
    111,385.60x = 16,762,374,389.76
  5. Step 5: Solve for x
    x = 16,762,374,389.76/111,385.60
  6. Step 6: Final answer
    x = 150,489.60

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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.