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Finding the Fourth Proportional to 104,605.16, 156,891.24 and 86,949.32

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Solution

The fourth proportional to 104,605.16, 156,891.24 and 86,949.32 is: 130,410.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,605.16 : 156,891.24 = 86,949.32 : x
  2. Step 2: Convert to fraction form
    104,605.16/156,891.24 = 86,949.32/x
  3. Step 3: Cross multiply
    104,605.16x = 156,891.24 × 86,949.32
  4. Step 4: Simplify right side
    104,605.16x = 13,641,586,631.96
  5. Step 5: Solve for x
    x = 13,641,586,631.96/104,605.16
  6. Step 6: Final answer
    x = 130,410.26

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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.