Home / 129,010.46-178,040.33-71,650.00

Finding the Fourth Proportional to 129,010.46, 178,040.33 and 71,650.00

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Solution

The fourth proportional to 129,010.46, 178,040.33 and 71,650.00 is: 98,880.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,010.46 : 178,040.33 = 71,650.00 : x
  2. Step 2: Convert to fraction form
    129,010.46/178,040.33 = 71,650.00/x
  3. Step 3: Cross multiply
    129,010.46x = 178,040.33 × 71,650.00
  4. Step 4: Simplify right side
    129,010.46x = 12,756,589,777.49
  5. Step 5: Solve for x
    x = 12,756,589,777.49/129,010.46
  6. Step 6: Final answer
    x = 98,880.28

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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.