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Finding the Fourth Proportional to 119,997.70, 165,607.06 and 66,288.58

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Solution

The fourth proportional to 119,997.70, 165,607.06 and 66,288.58 is: 91,483.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,997.70 : 165,607.06 = 66,288.58 : x
  2. Step 2: Convert to fraction form
    119,997.70/165,607.06 = 66,288.58/x
  3. Step 3: Cross multiply
    119,997.70x = 165,607.06 × 66,288.58
  4. Step 4: Simplify right side
    119,997.70x = 10,977,856,845.37
  5. Step 5: Solve for x
    x = 10,977,856,845.37/119,997.70
  6. Step 6: Final answer
    x = 91,483.89

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1.5x scale

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.