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Finding the Fourth Proportional to 111,506.40, 167,259.60 and 102,520.80

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Solution

The fourth proportional to 111,506.40, 167,259.60 and 102,520.80 is: 153,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,506.40 : 167,259.60 = 102,520.80 : x
  2. Step 2: Convert to fraction form
    111,506.40/167,259.60 = 102,520.80/x
  3. Step 3: Cross multiply
    111,506.40x = 167,259.60 × 102,520.80
  4. Step 4: Simplify right side
    111,506.40x = 17,147,587,999.68
  5. Step 5: Solve for x
    x = 17,147,587,999.68/111,506.40
  6. Step 6: Final answer
    x = 153,781.20

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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.