Home / 129,675.36-178,949.52-73,085.60

Finding the Fourth Proportional to 129,675.36, 178,949.52 and 73,085.60

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Solution

The fourth proportional to 129,675.36, 178,949.52 and 73,085.60 is: 100,856.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,675.36 : 178,949.52 = 73,085.60 : x
  2. Step 2: Convert to fraction form
    129,675.36/178,949.52 = 73,085.60/x
  3. Step 3: Cross multiply
    129,675.36x = 178,949.52 × 73,085.60
  4. Step 4: Simplify right side
    129,675.36x = 13,078,633,038.91
  5. Step 5: Solve for x
    x = 13,078,633,038.91/129,675.36
  6. Step 6: Final answer
    x = 100,856.73

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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.