Home / 165,715.20-248,572.80-102,729.60

Finding the Fourth Proportional to 165,715.20, 248,572.80 and 102,729.60

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Solution

The fourth proportional to 165,715.20, 248,572.80 and 102,729.60 is: 154,094.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,715.20 : 248,572.80 = 102,729.60 : x
  2. Step 2: Convert to fraction form
    165,715.20/248,572.80 = 102,729.60/x
  3. Step 3: Cross multiply
    165,715.20x = 248,572.80 × 102,729.60
  4. Step 4: Simplify right side
    165,715.20x = 25,535,784,314.88
  5. Step 5: Solve for x
    x = 25,535,784,314.88/165,715.20
  6. Step 6: Final answer
    x = 154,094.40

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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.