Home / 188,128.32-282,235.58-81,530.16

Finding the Fourth Proportional to 188,128.32, 282,235.58 and 81,530.16

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Solution

The fourth proportional to 188,128.32, 282,235.58 and 81,530.16 is: 122,313.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,128.32 : 282,235.58 = 81,530.16 : x
  2. Step 2: Convert to fraction form
    188,128.32/282,235.58 = 81,530.16/x
  3. Step 3: Cross multiply
    188,128.32x = 282,235.58 × 81,530.16
  4. Step 4: Simplify right side
    188,128.32x = 23,010,711,995.09
  5. Step 5: Solve for x
    x = 23,010,711,995.09/188,128.32
  6. Step 6: Final answer
    x = 122,313.92

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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.