Home / 130,930.56-180,662.40-74,321.28

Finding the Fourth Proportional to 130,930.56, 180,662.40 and 74,321.28

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Solution

The fourth proportional to 130,930.56, 180,662.40 and 74,321.28 is: 102,551.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,930.56 : 180,662.40 = 74,321.28 : x
  2. Step 2: Convert to fraction form
    130,930.56/180,662.40 = 74,321.28/x
  3. Step 3: Cross multiply
    130,930.56x = 180,662.40 × 74,321.28
  4. Step 4: Simplify right side
    130,930.56x = 13,427,060,815.87
  5. Step 5: Solve for x
    x = 13,427,060,815.87/130,930.56
  6. Step 6: Final answer
    x = 102,551.01

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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.