Home / 129,053.40-178,087.91-71,696.74

Finding the Fourth Proportional to 129,053.40, 178,087.91 and 71,696.74

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Solution

The fourth proportional to 129,053.40, 178,087.91 and 71,696.74 is: 98,938.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,053.40 : 178,087.91 = 71,696.74 : x
  2. Step 2: Convert to fraction form
    129,053.40/178,087.91 = 71,696.74/x
  3. Step 3: Cross multiply
    129,053.40x = 178,087.91 × 71,696.74
  4. Step 4: Simplify right side
    129,053.40x = 12,768,322,846.39
  5. Step 5: Solve for x
    x = 12,768,322,846.39/129,053.40
  6. Step 6: Final answer
    x = 98,938.29

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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.