Home / 101,986.74-140,741.43-56,664.54

Finding the Fourth Proportional to 101,986.74, 140,741.43 and 56,664.54

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Solution

The fourth proportional to 101,986.74, 140,741.43 and 56,664.54 is: 78,196.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,986.74 : 140,741.43 = 56,664.54 : x
  2. Step 2: Convert to fraction form
    101,986.74/140,741.43 = 56,664.54/x
  3. Step 3: Cross multiply
    101,986.74x = 140,741.43 × 56,664.54
  4. Step 4: Simplify right side
    101,986.74x = 7,975,048,389.89
  5. Step 5: Solve for x
    x = 7,975,048,389.89/101,986.74
  6. Step 6: Final answer
    x = 78,196.91

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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.