Home / 129,887.23-178,556.30-111,670.86

Finding the Fourth Proportional to 129,887.23, 178,556.30 and 111,670.86

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Solution

The fourth proportional to 129,887.23, 178,556.30 and 111,670.86 is: 153,514.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,887.23 : 178,556.30 = 111,670.86 : x
  2. Step 2: Convert to fraction form
    129,887.23/178,556.30 = 111,670.86/x
  3. Step 3: Cross multiply
    129,887.23x = 178,556.30 × 111,670.86
  4. Step 4: Simplify right side
    129,887.23x = 19,939,535,579.42
  5. Step 5: Solve for x
    x = 19,939,535,579.42/129,887.23
  6. Step 6: Final answer
    x = 153,514.21

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.