Home / 139,968.36-193,158-76,305.60

Finding the Fourth Proportional to 139,968.36, 193,158 and 76,305.60

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Solution

The fourth proportional to 139,968.36, 193,158 and 76,305.60 is: 105,302.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968.36 : 193,158 = 76,305.60 : x
  2. Step 2: Convert to fraction form
    139,968.36/193,158 = 76,305.60/x
  3. Step 3: Cross multiply
    139,968.36x = 193,158 × 76,305.60
  4. Step 4: Simplify right side
    139,968.36x = 14,739,037,084.80
  5. Step 5: Solve for x
    x = 14,739,037,084.80/139,968.36
  6. Step 6: Final answer
    x = 105,302.63

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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.