Home / 223,577.20-308,535.78-128,083.60

Finding the Fourth Proportional to 223,577.20, 308,535.78 and 128,083.60

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Solution

The fourth proportional to 223,577.20, 308,535.78 and 128,083.60 is: 176,754.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,577.20 : 308,535.78 = 128,083.60 : x
  2. Step 2: Convert to fraction form
    223,577.20/308,535.78 = 128,083.60/x
  3. Step 3: Cross multiply
    223,577.20x = 308,535.78 × 128,083.60
  4. Step 4: Simplify right side
    223,577.20x = 39,518,373,431.21
  5. Step 5: Solve for x
    x = 39,518,373,431.21/223,577.20
  6. Step 6: Final answer
    x = 176,754.93

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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.