Home / 139,710.40-192,313.38-121,774.12

Finding the Fourth Proportional to 139,710.40, 192,313.38 and 121,774.12

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Solution

The fourth proportional to 139,710.40, 192,313.38 and 121,774.12 is: 167,623.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,710.40 : 192,313.38 = 121,774.12 : x
  2. Step 2: Convert to fraction form
    139,710.40/192,313.38 = 121,774.12/x
  3. Step 3: Cross multiply
    139,710.40x = 192,313.38 × 121,774.12
  4. Step 4: Simplify right side
    139,710.40x = 23,418,792,613.73
  5. Step 5: Solve for x
    x = 23,418,792,613.73/139,710.40
  6. Step 6: Final answer
    x = 167,623.83

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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.