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Finding the Fourth Proportional to 165,905.40, 248,858.10 and 55,097.40

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Solution

The fourth proportional to 165,905.40, 248,858.10 and 55,097.40 is: 82,646.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,905.40 : 248,858.10 = 55,097.40 : x
  2. Step 2: Convert to fraction form
    165,905.40/248,858.10 = 55,097.40/x
  3. Step 3: Cross multiply
    165,905.40x = 248,858.10 × 55,097.40
  4. Step 4: Simplify right side
    165,905.40x = 13,711,434,278.94
  5. Step 5: Solve for x
    x = 13,711,434,278.94/165,905.40
  6. Step 6: Final answer
    x = 82,646.10

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1.5x scale

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.