Home / 75,119.78-112,517.66-70,703.40

Finding the Fourth Proportional to 75,119.78, 112,517.66 and 70,703.40

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Solution

The fourth proportional to 75,119.78, 112,517.66 and 70,703.40 is: 105,902.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,119.78 : 112,517.66 = 70,703.40 : x
  2. Step 2: Convert to fraction form
    75,119.78/112,517.66 = 70,703.40/x
  3. Step 3: Cross multiply
    75,119.78x = 112,517.66 × 70,703.40
  4. Step 4: Simplify right side
    75,119.78x = 7,955,380,768.53
  5. Step 5: Solve for x
    x = 7,955,380,768.53/75,119.78
  6. Step 6: Final answer
    x = 105,902.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.