Home / 185,665.58-278,018.73-128,140.33

Finding the Fourth Proportional to 185,665.58, 278,018.73 and 128,140.33

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Solution

The fourth proportional to 185,665.58, 278,018.73 and 128,140.33 is: 191,879.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,665.58 : 278,018.73 = 128,140.33 : x
  2. Step 2: Convert to fraction form
    185,665.58/278,018.73 = 128,140.33/x
  3. Step 3: Cross multiply
    185,665.58x = 278,018.73 × 128,140.33
  4. Step 4: Simplify right side
    185,665.58x = 35,625,411,808.38
  5. Step 5: Solve for x
    x = 35,625,411,808.38/185,665.58
  6. Step 6: Final answer
    x = 191,879.47

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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.