Home / 205,485.06-283,489.29-128,959.50

Finding the Fourth Proportional to 205,485.06, 283,489.29 and 128,959.50

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Solution

The fourth proportional to 205,485.06, 283,489.29 and 128,959.50 is: 177,913.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,485.06 : 283,489.29 = 128,959.50 : x
  2. Step 2: Convert to fraction form
    205,485.06/283,489.29 = 128,959.50/x
  3. Step 3: Cross multiply
    205,485.06x = 283,489.29 × 128,959.50
  4. Step 4: Simplify right side
    205,485.06x = 36,558,637,093.76
  5. Step 5: Solve for x
    x = 36,558,637,093.76/205,485.06
  6. Step 6: Final answer
    x = 177,913.84

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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.