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Finding the Fourth Proportional to 111,072.60, 153,279.90 and 60,771.60

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Solution

The fourth proportional to 111,072.60, 153,279.90 and 60,771.60 is: 83,864.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,072.60 : 153,279.90 = 60,771.60 : x
  2. Step 2: Convert to fraction form
    111,072.60/153,279.90 = 60,771.60/x
  3. Step 3: Cross multiply
    111,072.60x = 153,279.90 × 60,771.60
  4. Step 4: Simplify right side
    111,072.60x = 9,315,064,770.84
  5. Step 5: Solve for x
    x = 9,315,064,770.84/111,072.60
  6. Step 6: Final answer
    x = 83,864.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.