Home / 236,338.89-326,152.07-128,912.78

Finding the Fourth Proportional to 236,338.89, 326,152.07 and 128,912.78

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Solution

The fourth proportional to 236,338.89, 326,152.07 and 128,912.78 is: 177,902.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,338.89 : 326,152.07 = 128,912.78 : x
  2. Step 2: Convert to fraction form
    236,338.89/326,152.07 = 128,912.78/x
  3. Step 3: Cross multiply
    236,338.89x = 326,152.07 × 128,912.78
  4. Step 4: Simplify right side
    236,338.89x = 42,045,167,771.13
  5. Step 5: Solve for x
    x = 42,045,167,771.13/236,338.89
  6. Step 6: Final answer
    x = 177,902.03

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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.