Home / 139,968.56-193,156.68-76,305.04

Finding the Fourth Proportional to 139,968.56, 193,156.68 and 76,305.04

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Solution

The fourth proportional to 139,968.56, 193,156.68 and 76,305.04 is: 105,300.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968.56 : 193,156.68 = 76,305.04 : x
  2. Step 2: Convert to fraction form
    139,968.56/193,156.68 = 76,305.04/x
  3. Step 3: Cross multiply
    139,968.56x = 193,156.68 × 76,305.04
  4. Step 4: Simplify right side
    139,968.56x = 14,738,828,193.67
  5. Step 5: Solve for x
    x = 14,738,828,193.67/139,968.56
  6. Step 6: Final answer
    x = 105,300.99

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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.