Home / 131,431.45-181,186.56-93,640.09

Finding the Fourth Proportional to 131,431.45, 181,186.56 and 93,640.09

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Solution

The fourth proportional to 131,431.45, 181,186.56 and 93,640.09 is: 129,088.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,431.45 : 181,186.56 = 93,640.09 : x
  2. Step 2: Convert to fraction form
    131,431.45/181,186.56 = 93,640.09/x
  3. Step 3: Cross multiply
    131,431.45x = 181,186.56 × 93,640.09
  4. Step 4: Simplify right side
    131,431.45x = 16,966,325,785.19
  5. Step 5: Solve for x
    x = 16,966,325,785.19/131,431.45
  6. Step 6: Final answer
    x = 129,088.78

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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.