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Finding the Fourth Proportional to 111,630.40, 167,445.60 and 64,391.20

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Solution

The fourth proportional to 111,630.40, 167,445.60 and 64,391.20 is: 96,586.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,630.40 : 167,445.60 = 64,391.20 : x
  2. Step 2: Convert to fraction form
    111,630.40/167,445.60 = 64,391.20/x
  3. Step 3: Cross multiply
    111,630.40x = 167,445.60 × 64,391.20
  4. Step 4: Simplify right side
    111,630.40x = 10,782,023,118.72
  5. Step 5: Solve for x
    x = 10,782,023,118.72/111,630.40
  6. Step 6: Final answer
    x = 96,586.80

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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.