Home / 148,812.88-205,365.39-85,171.18

Finding the Fourth Proportional to 148,812.88, 205,365.39 and 85,171.18

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Solution

The fourth proportional to 148,812.88, 205,365.39 and 85,171.18 is: 117,538.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,812.88 : 205,365.39 = 85,171.18 : x
  2. Step 2: Convert to fraction form
    148,812.88/205,365.39 = 85,171.18/x
  3. Step 3: Cross multiply
    148,812.88x = 205,365.39 × 85,171.18
  4. Step 4: Simplify right side
    148,812.88x = 17,491,212,597.46
  5. Step 5: Solve for x
    x = 17,491,212,597.46/148,812.88
  6. Step 6: Final answer
    x = 117,538.30

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1.5x scale

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.