Home / 129,666.96-178,945.20-73,083.60

Finding the Fourth Proportional to 129,666.96, 178,945.20 and 73,083.60

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Solution

The fourth proportional to 129,666.96, 178,945.20 and 73,083.60 is: 100,858.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,666.96 : 178,945.20 = 73,083.60 : x
  2. Step 2: Convert to fraction form
    129,666.96/178,945.20 = 73,083.60/x
  3. Step 3: Cross multiply
    129,666.96x = 178,945.20 × 73,083.60
  4. Step 4: Simplify right side
    129,666.96x = 13,077,959,418.72
  5. Step 5: Solve for x
    x = 13,077,959,418.72/129,666.96
  6. Step 6: Final answer
    x = 100,858.07

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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.