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Finding the Fourth Proportional to 103,855.00, 143,330.01 and 61,427.20

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Solution

The fourth proportional to 103,855.00, 143,330.01 and 61,427.20 is: 84,775.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,855.00 : 143,330.01 = 61,427.20 : x
  2. Step 2: Convert to fraction form
    103,855.00/143,330.01 = 61,427.20/x
  3. Step 3: Cross multiply
    103,855.00x = 143,330.01 × 61,427.20
  4. Step 4: Simplify right side
    103,855.00x = 8,804,360,473.62
  5. Step 5: Solve for x
    x = 8,804,360,473.62/103,855.00
  6. Step 6: Final answer
    x = 84,775.51

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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.