Home / 130,139.84-195,247.12-54,223.60

Finding the Fourth Proportional to 130,139.84, 195,247.12 and 54,223.60

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Solution

The fourth proportional to 130,139.84, 195,247.12 and 54,223.60 is: 81,350.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,139.84 : 195,247.12 = 54,223.60 : x
  2. Step 2: Convert to fraction form
    130,139.84/195,247.12 = 54,223.60/x
  3. Step 3: Cross multiply
    130,139.84x = 195,247.12 × 54,223.60
  4. Step 4: Simplify right side
    130,139.84x = 10,587,001,736.03
  5. Step 5: Solve for x
    x = 10,587,001,736.03/130,139.84
  6. Step 6: Final answer
    x = 81,350.97

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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.