Home / 136,865.30-188,957.61-128,394.32

Finding the Fourth Proportional to 136,865.30, 188,957.61 and 128,394.32

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Solution

The fourth proportional to 136,865.30, 188,957.61 and 128,394.32 is: 177,262.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,865.30 : 188,957.61 = 128,394.32 : x
  2. Step 2: Convert to fraction form
    136,865.30/188,957.61 = 128,394.32/x
  3. Step 3: Cross multiply
    136,865.30x = 188,957.61 × 128,394.32
  4. Step 4: Simplify right side
    136,865.30x = 24,261,082,899.99
  5. Step 5: Solve for x
    x = 24,261,082,899.99/136,865.30
  6. Step 6: Final answer
    x = 177,262.49

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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.