Home / 155,986.40-233,979.60-85,127.60

Finding the Fourth Proportional to 155,986.40, 233,979.60 and 85,127.60

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Solution

The fourth proportional to 155,986.40, 233,979.60 and 85,127.60 is: 127,691.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,986.40 : 233,979.60 = 85,127.60 : x
  2. Step 2: Convert to fraction form
    155,986.40/233,979.60 = 85,127.60/x
  3. Step 3: Cross multiply
    155,986.40x = 233,979.60 × 85,127.60
  4. Step 4: Simplify right side
    155,986.40x = 19,918,121,796.96
  5. Step 5: Solve for x
    x = 19,918,121,796.96/155,986.40
  6. Step 6: Final answer
    x = 127,691.40

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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.