Home / 236,153.32-325,889.64-128,721.40

Finding the Fourth Proportional to 236,153.32, 325,889.64 and 128,721.40

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Solution

The fourth proportional to 236,153.32, 325,889.64 and 128,721.40 is: 177,634.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,153.32 : 325,889.64 = 128,721.40 : x
  2. Step 2: Convert to fraction form
    236,153.32/325,889.64 = 128,721.40/x
  3. Step 3: Cross multiply
    236,153.32x = 325,889.64 × 128,721.40
  4. Step 4: Simplify right side
    236,153.32x = 41,948,970,706.30
  5. Step 5: Solve for x
    x = 41,948,970,706.30/236,153.32
  6. Step 6: Final answer
    x = 177,634.47

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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.