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Finding the Fourth Proportional to 119,950.48, 165,366.12 and 85,986.64

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Solution

The fourth proportional to 119,950.48, 165,366.12 and 85,986.64 is: 118,542.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,950.48 : 165,366.12 = 85,986.64 : x
  2. Step 2: Convert to fraction form
    119,950.48/165,366.12 = 85,986.64/x
  3. Step 3: Cross multiply
    119,950.48x = 165,366.12 × 85,986.64
  4. Step 4: Simplify right side
    119,950.48x = 14,219,277,028.64
  5. Step 5: Solve for x
    x = 14,219,277,028.64/119,950.48
  6. Step 6: Final answer
    x = 118,542.89

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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.