Home / 139,982.28-193,179.20-86,302.76

Finding the Fourth Proportional to 139,982.28, 193,179.20 and 86,302.76

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Solution

The fourth proportional to 139,982.28, 193,179.20 and 86,302.76 is: 119,100.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,982.28 : 193,179.20 = 86,302.76 : x
  2. Step 2: Convert to fraction form
    139,982.28/193,179.20 = 86,302.76/x
  3. Step 3: Cross multiply
    139,982.28x = 193,179.20 × 86,302.76
  4. Step 4: Simplify right side
    139,982.28x = 16,671,898,134.59
  5. Step 5: Solve for x
    x = 16,671,898,134.59/139,982.28
  6. Step 6: Final answer
    x = 119,100.06

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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.