Home / 128,501.24-177,412.07-82,579.50

Finding the Fourth Proportional to 128,501.24, 177,412.07 and 82,579.50

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Solution

The fourth proportional to 128,501.24, 177,412.07 and 82,579.50 is: 114,011.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,501.24 : 177,412.07 = 82,579.50 : x
  2. Step 2: Convert to fraction form
    128,501.24/177,412.07 = 82,579.50/x
  3. Step 3: Cross multiply
    128,501.24x = 177,412.07 × 82,579.50
  4. Step 4: Simplify right side
    128,501.24x = 14,650,600,241.01
  5. Step 5: Solve for x
    x = 14,650,600,241.01/128,501.24
  6. Step 6: Final answer
    x = 114,011.36

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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.