Home / 235,917.86-325,570.36-128,487.81

Finding the Fourth Proportional to 235,917.86, 325,570.36 and 128,487.81

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Solution

The fourth proportional to 235,917.86, 325,570.36 and 128,487.81 is: 177,315.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,917.86 : 325,570.36 = 128,487.81 : x
  2. Step 2: Convert to fraction form
    235,917.86/325,570.36 = 128,487.81/x
  3. Step 3: Cross multiply
    235,917.86x = 325,570.36 × 128,487.81
  4. Step 4: Simplify right side
    235,917.86x = 41,831,822,557.31
  5. Step 5: Solve for x
    x = 41,831,822,557.31/235,917.86
  6. Step 6: Final answer
    x = 177,315.20

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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.