Home / 130,532.46-180,131.30-76,820.64

Finding the Fourth Proportional to 130,532.46, 180,131.30 and 76,820.64

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Solution

The fourth proportional to 130,532.46, 180,131.30 and 76,820.64 is: 106,010.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,532.46 : 180,131.30 = 76,820.64 : x
  2. Step 2: Convert to fraction form
    130,532.46/180,131.30 = 76,820.64/x
  3. Step 3: Cross multiply
    130,532.46x = 180,131.30 × 76,820.64
  4. Step 4: Simplify right side
    130,532.46x = 13,837,801,750.03
  5. Step 5: Solve for x
    x = 13,837,801,750.03/130,532.46
  6. Step 6: Final answer
    x = 106,010.43

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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.