Home / 129,003.42-178,008.60-71,634.94

Finding the Fourth Proportional to 129,003.42, 178,008.60 and 71,634.94

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Solution

The fourth proportional to 129,003.42, 178,008.60 and 71,634.94 is: 98,847.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,003.42 : 178,008.60 = 71,634.94 : x
  2. Step 2: Convert to fraction form
    129,003.42/178,008.60 = 71,634.94/x
  3. Step 3: Cross multiply
    129,003.42x = 178,008.60 × 71,634.94
  4. Step 4: Simplify right side
    129,003.42x = 12,751,634,666.83
  5. Step 5: Solve for x
    x = 12,751,634,666.83/129,003.42
  6. Step 6: Final answer
    x = 98,847.26

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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.