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Finding the Fourth Proportional to 111,305.08, 153,616.62 and 71,005.96

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Solution

The fourth proportional to 111,305.08, 153,616.62 and 71,005.96 is: 97,998.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,305.08 : 153,616.62 = 71,005.96 : x
  2. Step 2: Convert to fraction form
    111,305.08/153,616.62 = 71,005.96/x
  3. Step 3: Cross multiply
    111,305.08x = 153,616.62 × 71,005.96
  4. Step 4: Simplify right side
    111,305.08x = 10,907,695,575.06
  5. Step 5: Solve for x
    x = 10,907,695,575.06/111,305.08
  6. Step 6: Final answer
    x = 97,998.18

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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.