Home / 86,128.44-129,079.26-46,142.79

Finding the Fourth Proportional to 86,128.44, 129,079.26 and 46,142.79

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Solution

The fourth proportional to 86,128.44, 129,079.26 and 46,142.79 is: 69,153.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,128.44 : 129,079.26 = 46,142.79 : x
  2. Step 2: Convert to fraction form
    86,128.44/129,079.26 = 46,142.79/x
  3. Step 3: Cross multiply
    86,128.44x = 129,079.26 × 46,142.79
  4. Step 4: Simplify right side
    86,128.44x = 5,956,077,187.54
  5. Step 5: Solve for x
    x = 5,956,077,187.54/86,128.44
  6. Step 6: Final answer
    x = 69,153.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.