Home / 128,825.10-193,237.65-57,747.60

Finding the Fourth Proportional to 128,825.10, 193,237.65 and 57,747.60

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Solution

The fourth proportional to 128,825.10, 193,237.65 and 57,747.60 is: 86,621.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,825.10 : 193,237.65 = 57,747.60 : x
  2. Step 2: Convert to fraction form
    128,825.10/193,237.65 = 57,747.60/x
  3. Step 3: Cross multiply
    128,825.10x = 193,237.65 × 57,747.60
  4. Step 4: Simplify right side
    128,825.10x = 11,159,010,517.14
  5. Step 5: Solve for x
    x = 11,159,010,517.14/128,825.10
  6. Step 6: Final answer
    x = 86,621.40

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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.