Home / 236,147.40-325,879.20-128,717.10

Finding the Fourth Proportional to 236,147.40, 325,879.20 and 128,717.10

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Solution

The fourth proportional to 236,147.40, 325,879.20 and 128,717.10 is: 177,627.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,147.40 : 325,879.20 = 128,717.10 : x
  2. Step 2: Convert to fraction form
    236,147.40/325,879.20 = 128,717.10/x
  3. Step 3: Cross multiply
    236,147.40x = 325,879.20 × 128,717.10
  4. Step 4: Simplify right side
    236,147.40x = 41,946,225,574.32
  5. Step 5: Solve for x
    x = 41,946,225,574.32/236,147.40
  6. Step 6: Final answer
    x = 177,627.30

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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.