Home / 130,849.29-195,975.05-78,150.69

Finding the Fourth Proportional to 130,849.29, 195,975.05 and 78,150.69

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Solution

The fourth proportional to 130,849.29, 195,975.05 and 78,150.69 is: 117,047.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,849.29 : 195,975.05 = 78,150.69 : x
  2. Step 2: Convert to fraction form
    130,849.29/195,975.05 = 78,150.69/x
  3. Step 3: Cross multiply
    130,849.29x = 195,975.05 × 78,150.69
  4. Step 4: Simplify right side
    130,849.29x = 15,315,584,989.53
  5. Step 5: Solve for x
    x = 15,315,584,989.53/130,849.29
  6. Step 6: Final answer
    x = 117,047.52

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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.