Home / 129,705.07-178,995.72-73,116.44

Finding the Fourth Proportional to 129,705.07, 178,995.72 and 73,116.44

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Solution

The fourth proportional to 129,705.07, 178,995.72 and 73,116.44 is: 100,902.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,705.07 : 178,995.72 = 73,116.44 : x
  2. Step 2: Convert to fraction form
    129,705.07/178,995.72 = 73,116.44/x
  3. Step 3: Cross multiply
    129,705.07x = 178,995.72 × 73,116.44
  4. Step 4: Simplify right side
    129,705.07x = 13,087,529,821.64
  5. Step 5: Solve for x
    x = 13,087,529,821.64/129,705.07
  6. Step 6: Final answer
    x = 100,902.23

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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.