Home / 129,329.87-178,374.09-84,022.44

Finding the Fourth Proportional to 129,329.87, 178,374.09 and 84,022.44

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Solution

The fourth proportional to 129,329.87, 178,374.09 and 84,022.44 is: 115,885.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,329.87 : 178,374.09 = 84,022.44 : x
  2. Step 2: Convert to fraction form
    129,329.87/178,374.09 = 84,022.44/x
  3. Step 3: Cross multiply
    129,329.87x = 178,374.09 × 84,022.44
  4. Step 4: Simplify right side
    129,329.87x = 14,987,426,274.58
  5. Step 5: Solve for x
    x = 14,987,426,274.58/129,329.87
  6. Step 6: Final answer
    x = 115,885.27

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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.