Home / 129,886.23-178,554.93-111,669.86

Finding the Fourth Proportional to 129,886.23, 178,554.93 and 111,669.86

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Solution

The fourth proportional to 129,886.23, 178,554.93 and 111,669.86 is: 153,512.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,886.23 : 178,554.93 = 111,669.86 : x
  2. Step 2: Convert to fraction form
    129,886.23/178,554.93 = 111,669.86/x
  3. Step 3: Cross multiply
    129,886.23x = 178,554.93 × 111,669.86
  4. Step 4: Simplify right side
    129,886.23x = 19,939,203,142.64
  5. Step 5: Solve for x
    x = 19,939,203,142.64/129,886.23
  6. Step 6: Final answer
    x = 153,512.83

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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.