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Finding the Fourth Proportional to 165,516, 228,412.08 and 90,065.04

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Solution

The fourth proportional to 165,516, 228,412.08 and 90,065.04 is: 124,289.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,516 : 228,412.08 = 90,065.04 : x
  2. Step 2: Convert to fraction form
    165,516/228,412.08 = 90,065.04/x
  3. Step 3: Cross multiply
    165,516x = 228,412.08 × 90,065.04
  4. Step 4: Simplify right side
    165,516x = 20,571,943,121.68
  5. Step 5: Solve for x
    x = 20,571,943,121.68/165,516
  6. Step 6: Final answer
    x = 124,289.76

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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.