Home / 135,039.75-186,354.86-75,423.75

Finding the Fourth Proportional to 135,039.75, 186,354.86 and 75,423.75

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Solution

The fourth proportional to 135,039.75, 186,354.86 and 75,423.75 is: 104,084.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,039.75 : 186,354.86 = 75,423.75 : x
  2. Step 2: Convert to fraction form
    135,039.75/186,354.86 = 75,423.75/x
  3. Step 3: Cross multiply
    135,039.75x = 186,354.86 × 75,423.75
  4. Step 4: Simplify right side
    135,039.75x = 14,055,581,994.81
  5. Step 5: Solve for x
    x = 14,055,581,994.81/135,039.75
  6. Step 6: Final answer
    x = 104,084.78

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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.