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Finding the Fourth Proportional to 165,813.70, 248,720.55 and 55,005.70

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Solution

The fourth proportional to 165,813.70, 248,720.55 and 55,005.70 is: 82,508.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,813.70 : 248,720.55 = 55,005.70 : x
  2. Step 2: Convert to fraction form
    165,813.70/248,720.55 = 55,005.70/x
  3. Step 3: Cross multiply
    165,813.70x = 248,720.55 × 55,005.70
  4. Step 4: Simplify right side
    165,813.70x = 13,681,047,957.14
  5. Step 5: Solve for x
    x = 13,681,047,957.14/165,813.70
  6. Step 6: Final answer
    x = 82,508.55

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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.