Home / 129,706.07-178,997.10-73,117.44

Finding the Fourth Proportional to 129,706.07, 178,997.10 and 73,117.44

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Solution

The fourth proportional to 129,706.07, 178,997.10 and 73,117.44 is: 100,903.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,706.07 : 178,997.10 = 73,117.44 : x
  2. Step 2: Convert to fraction form
    129,706.07/178,997.10 = 73,117.44/x
  3. Step 3: Cross multiply
    129,706.07x = 178,997.10 × 73,117.44
  4. Step 4: Simplify right side
    129,706.07x = 13,087,809,719.42
  5. Step 5: Solve for x
    x = 13,087,809,719.42/129,706.07
  6. Step 6: Final answer
    x = 100,903.60

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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.