Home / 236,135.40-325,865.61-128,705.10

Finding the Fourth Proportional to 236,135.40, 325,865.61 and 128,705.10

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Solution

The fourth proportional to 236,135.40, 325,865.61 and 128,705.10 is: 177,612.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,135.40 : 325,865.61 = 128,705.10 : x
  2. Step 2: Convert to fraction form
    236,135.40/325,865.61 = 128,705.10/x
  3. Step 3: Cross multiply
    236,135.40x = 325,865.61 × 128,705.10
  4. Step 4: Simplify right side
    236,135.40x = 41,940,565,921.61
  5. Step 5: Solve for x
    x = 41,940,565,921.61/236,135.40
  6. Step 6: Final answer
    x = 177,612.36

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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.