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Finding the Fourth Proportional to 86,271.40, 119,119.40 and 84,893.60

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Solution

The fourth proportional to 86,271.40, 119,119.40 and 84,893.60 is: 117,217.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,271.40 : 119,119.40 = 84,893.60 : x
  2. Step 2: Convert to fraction form
    86,271.40/119,119.40 = 84,893.60/x
  3. Step 3: Cross multiply
    86,271.40x = 119,119.40 × 84,893.60
  4. Step 4: Simplify right side
    86,271.40x = 10,112,474,695.84
  5. Step 5: Solve for x
    x = 10,112,474,695.84/86,271.40
  6. Step 6: Final answer
    x = 117,217.00

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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.