Home / 111,077.26-153,127.17-79,190.80

Finding the Fourth Proportional to 111,077.26, 153,127.17 and 79,190.80

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Solution

The fourth proportional to 111,077.26, 153,127.17 and 79,190.80 is: 109,169.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,077.26 : 153,127.17 = 79,190.80 : x
  2. Step 2: Convert to fraction form
    111,077.26/153,127.17 = 79,190.80/x
  3. Step 3: Cross multiply
    111,077.26x = 153,127.17 × 79,190.80
  4. Step 4: Simplify right side
    111,077.26x = 12,126,263,094.04
  5. Step 5: Solve for x
    x = 12,126,263,094.04/111,077.26
  6. Step 6: Final answer
    x = 109,169.63

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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.