Home / 139,974.40-193,349.04-103,749.28

Finding the Fourth Proportional to 139,974.40, 193,349.04 and 103,749.28

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Solution

The fourth proportional to 139,974.40, 193,349.04 and 103,749.28 is: 143,310.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,974.40 : 193,349.04 = 103,749.28 : x
  2. Step 2: Convert to fraction form
    139,974.40/193,349.04 = 103,749.28/x
  3. Step 3: Cross multiply
    139,974.40x = 193,349.04 × 103,749.28
  4. Step 4: Simplify right side
    139,974.40x = 20,059,823,688.69
  5. Step 5: Solve for x
    x = 20,059,823,688.69/139,974.40
  6. Step 6: Final answer
    x = 143,310.66

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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.