Home / 188,345.20-282,080.40-128,858.80

Finding the Fourth Proportional to 188,345.20, 282,080.40 and 128,858.80

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Solution

The fourth proportional to 188,345.20, 282,080.40 and 128,858.80 is: 192,988.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,345.20 : 282,080.40 = 128,858.80 : x
  2. Step 2: Convert to fraction form
    188,345.20/282,080.40 = 128,858.80/x
  3. Step 3: Cross multiply
    188,345.20x = 282,080.40 × 128,858.80
  4. Step 4: Simplify right side
    188,345.20x = 36,348,541,847.52
  5. Step 5: Solve for x
    x = 36,348,541,847.52/188,345.20
  6. Step 6: Final answer
    x = 192,988.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.