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Finding the Fourth Proportional to 152,620.72, 210,612.64 and 84,636.60

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Solution

The fourth proportional to 152,620.72, 210,612.64 and 84,636.60 is: 116,796.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,620.72 : 210,612.64 = 84,636.60 : x
  2. Step 2: Convert to fraction form
    152,620.72/210,612.64 = 84,636.60/x
  3. Step 3: Cross multiply
    152,620.72x = 210,612.64 × 84,636.60
  4. Step 4: Simplify right side
    152,620.72x = 17,825,537,766.62
  5. Step 5: Solve for x
    x = 17,825,537,766.62/152,620.72
  6. Step 6: Final answer
    x = 116,796.32

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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.