Home / 130,939.28-180,697.44-74,351.84

Finding the Fourth Proportional to 130,939.28, 180,697.44 and 74,351.84

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Solution

The fourth proportional to 130,939.28, 180,697.44 and 74,351.84 is: 102,606.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,939.28 : 180,697.44 = 74,351.84 : x
  2. Step 2: Convert to fraction form
    130,939.28/180,697.44 = 74,351.84/x
  3. Step 3: Cross multiply
    130,939.28x = 180,697.44 × 74,351.84
  4. Step 4: Simplify right side
    130,939.28x = 13,435,187,147.29
  5. Step 5: Solve for x
    x = 13,435,187,147.29/130,939.28
  6. Step 6: Final answer
    x = 102,606.24

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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.