Home / 130,958.70-180,718.20-80,056.68

Finding the Fourth Proportional to 130,958.70, 180,718.20 and 80,056.68

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Solution

The fourth proportional to 130,958.70, 180,718.20 and 80,056.68 is: 110,475.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,958.70 : 180,718.20 = 80,056.68 : x
  2. Step 2: Convert to fraction form
    130,958.70/180,718.20 = 80,056.68/x
  3. Step 3: Cross multiply
    130,958.70x = 180,718.20 × 80,056.68
  4. Step 4: Simplify right side
    130,958.70x = 14,467,699,107.58
  5. Step 5: Solve for x
    x = 14,467,699,107.58/130,958.70
  6. Step 6: Final answer
    x = 110,475.28

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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.