Home / 130,528.60-180,162.12-80,198.44

Finding the Fourth Proportional to 130,528.60, 180,162.12 and 80,198.44

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Solution

The fourth proportional to 130,528.60, 180,162.12 and 80,198.44 is: 110,693.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,528.60 : 180,162.12 = 80,198.44 : x
  2. Step 2: Convert to fraction form
    130,528.60/180,162.12 = 80,198.44/x
  3. Step 3: Cross multiply
    130,528.60x = 180,162.12 × 80,198.44
  4. Step 4: Simplify right side
    130,528.60x = 14,448,720,821.43
  5. Step 5: Solve for x
    x = 14,448,720,821.43/130,528.60
  6. Step 6: Final answer
    x = 110,693.91

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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.