Home / 138,982.36-191,795.81-75,320.15

Finding the Fourth Proportional to 138,982.36, 191,795.81 and 75,320.15

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Solution

The fourth proportional to 138,982.36, 191,795.81 and 75,320.15 is: 103,941.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,982.36 : 191,795.81 = 75,320.15 : x
  2. Step 2: Convert to fraction form
    138,982.36/191,795.81 = 75,320.15/x
  3. Step 3: Cross multiply
    138,982.36x = 191,795.81 × 75,320.15
  4. Step 4: Simplify right side
    138,982.36x = 14,446,089,178.57
  5. Step 5: Solve for x
    x = 14,446,089,178.57/138,982.36
  6. Step 6: Final answer
    x = 103,941.89

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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.