Home / 129,628.94-178,906.47-73,045.58

Finding the Fourth Proportional to 129,628.94, 178,906.47 and 73,045.58

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Solution

The fourth proportional to 129,628.94, 178,906.47 and 73,045.58 is: 100,813.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,628.94 : 178,906.47 = 73,045.58 : x
  2. Step 2: Convert to fraction form
    129,628.94/178,906.47 = 73,045.58/x
  3. Step 3: Cross multiply
    129,628.94x = 178,906.47 × 73,045.58
  4. Step 4: Simplify right side
    129,628.94x = 13,068,326,866.90
  5. Step 5: Solve for x
    x = 13,068,326,866.90/129,628.94
  6. Step 6: Final answer
    x = 100,813.34

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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.