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Finding the Fourth Proportional to 117,235.03, 161,776.68 and 74,789

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Solution

The fourth proportional to 117,235.03, 161,776.68 and 74,789 is: 103,203.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,235.03 : 161,776.68 = 74,789 : x
  2. Step 2: Convert to fraction form
    117,235.03/161,776.68 = 74,789/x
  3. Step 3: Cross multiply
    117,235.03x = 161,776.68 × 74,789
  4. Step 4: Simplify right side
    117,235.03x = 12,099,116,120.52
  5. Step 5: Solve for x
    x = 12,099,116,120.52/117,235.03
  6. Step 6: Final answer
    x = 103,203.93

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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.