Home / 218,629.10-301,729.62-127,979.60

Finding the Fourth Proportional to 218,629.10, 301,729.62 and 127,979.60

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Solution

The fourth proportional to 218,629.10, 301,729.62 and 127,979.60 is: 176,624.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,629.10 : 301,729.62 = 127,979.60 : x
  2. Step 2: Convert to fraction form
    218,629.10/301,729.62 = 127,979.60/x
  3. Step 3: Cross multiply
    218,629.10x = 301,729.62 × 127,979.60
  4. Step 4: Simplify right side
    218,629.10x = 38,615,236,075.75
  5. Step 5: Solve for x
    x = 38,615,236,075.75/218,629.10
  6. Step 6: Final answer
    x = 176,624.41

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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.