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Finding the Fourth Proportional to 111,332.90, 166,999.35 and 73,279.10

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Solution

The fourth proportional to 111,332.90, 166,999.35 and 73,279.10 is: 109,918.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,332.90 : 166,999.35 = 73,279.10 : x
  2. Step 2: Convert to fraction form
    111,332.90/166,999.35 = 73,279.10/x
  3. Step 3: Cross multiply
    111,332.90x = 166,999.35 × 73,279.10
  4. Step 4: Simplify right side
    111,332.90x = 12,237,562,068.59
  5. Step 5: Solve for x
    x = 12,237,562,068.59/111,332.90
  6. Step 6: Final answer
    x = 109,918.65

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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.