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Finding the Fourth Proportional to 104,290.98, 143,868.50 and 65,985.92

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Solution

The fourth proportional to 104,290.98, 143,868.50 and 65,985.92 is: 91,027.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,290.98 : 143,868.50 = 65,985.92 : x
  2. Step 2: Convert to fraction form
    104,290.98/143,868.50 = 65,985.92/x
  3. Step 3: Cross multiply
    104,290.98x = 143,868.50 × 65,985.92
  4. Step 4: Simplify right side
    104,290.98x = 9,493,295,331.52
  5. Step 5: Solve for x
    x = 9,493,295,331.52/104,290.98
  6. Step 6: Final answer
    x = 91,027.00

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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.