Home / 185,800.12-256,404.90-100,918.60

Finding the Fourth Proportional to 185,800.12, 256,404.90 and 100,918.60

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Solution

The fourth proportional to 185,800.12, 256,404.90 and 100,918.60 is: 139,268.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,800.12 : 256,404.90 = 100,918.60 : x
  2. Step 2: Convert to fraction form
    185,800.12/256,404.90 = 100,918.60/x
  3. Step 3: Cross multiply
    185,800.12x = 256,404.90 × 100,918.60
  4. Step 4: Simplify right side
    185,800.12x = 25,876,023,541.14
  5. Step 5: Solve for x
    x = 25,876,023,541.14/185,800.12
  6. Step 6: Final answer
    x = 139,268.07

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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.