Home / 129,326.36-178,369.27-84,018.94

Finding the Fourth Proportional to 129,326.36, 178,369.27 and 84,018.94

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Solution

The fourth proportional to 129,326.36, 178,369.27 and 84,018.94 is: 115,880.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,326.36 : 178,369.27 = 84,018.94 : x
  2. Step 2: Convert to fraction form
    129,326.36/178,369.27 = 84,018.94/x
  3. Step 3: Cross multiply
    129,326.36x = 178,369.27 × 84,018.94
  4. Step 4: Simplify right side
    129,326.36x = 14,986,396,338.00
  5. Step 5: Solve for x
    x = 14,986,396,338.00/129,326.36
  6. Step 6: Final answer
    x = 115,880.44

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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.