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Finding the Fourth Proportional to 165,039, 247,590.32 and 70,267.43

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Solution

The fourth proportional to 165,039, 247,590.32 and 70,267.43 is: 105,414.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,039 : 247,590.32 = 70,267.43 : x
  2. Step 2: Convert to fraction form
    165,039/247,590.32 = 70,267.43/x
  3. Step 3: Cross multiply
    165,039x = 247,590.32 × 70,267.43
  4. Step 4: Simplify right side
    165,039x = 17,397,533,889.99
  5. Step 5: Solve for x
    x = 17,397,533,889.99/165,039
  6. Step 6: Final answer
    x = 105,414.68

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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.