Home / 128,986.08-193,534.56-69,864

Finding the Fourth Proportional to 128,986.08, 193,534.56 and 69,864

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Solution

The fourth proportional to 128,986.08, 193,534.56 and 69,864 is: 104,826.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,986.08 : 193,534.56 = 69,864 : x
  2. Step 2: Convert to fraction form
    128,986.08/193,534.56 = 69,864/x
  3. Step 3: Cross multiply
    128,986.08x = 193,534.56 × 69,864
  4. Step 4: Simplify right side
    128,986.08x = 13,521,098,499.84
  5. Step 5: Solve for x
    x = 13,521,098,499.84/128,986.08
  6. Step 6: Final answer
    x = 104,826.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.