Home / 130,665.76-180,396.03-82,309.12

Finding the Fourth Proportional to 130,665.76, 180,396.03 and 82,309.12

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Solution

The fourth proportional to 130,665.76, 180,396.03 and 82,309.12 is: 113,635.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,665.76 : 180,396.03 = 82,309.12 : x
  2. Step 2: Convert to fraction form
    130,665.76/180,396.03 = 82,309.12/x
  3. Step 3: Cross multiply
    130,665.76x = 180,396.03 × 82,309.12
  4. Step 4: Simplify right side
    130,665.76x = 14,848,238,480.79
  5. Step 5: Solve for x
    x = 14,848,238,480.79/130,665.76
  6. Step 6: Final answer
    x = 113,635.27

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1.5x scale

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.