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Finding the Fourth Proportional to 133,068.90, 199,749.15 and 83,205.30

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Solution

The fourth proportional to 133,068.90, 199,749.15 and 83,205.30 is: 124,899.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,068.90 : 199,749.15 = 83,205.30 : x
  2. Step 2: Convert to fraction form
    133,068.90/199,749.15 = 83,205.30/x
  3. Step 3: Cross multiply
    133,068.90x = 199,749.15 × 83,205.30
  4. Step 4: Simplify right side
    133,068.90x = 16,620,187,950.50
  5. Step 5: Solve for x
    x = 16,620,187,950.50/133,068.90
  6. Step 6: Final answer
    x = 124,899.12

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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.