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Finding the Fourth Proportional to 133,750.60, 200,625.90 and 86,511.40

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Solution

The fourth proportional to 133,750.60, 200,625.90 and 86,511.40 is: 129,767.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,750.60 : 200,625.90 = 86,511.40 : x
  2. Step 2: Convert to fraction form
    133,750.60/200,625.90 = 86,511.40/x
  3. Step 3: Cross multiply
    133,750.60x = 200,625.90 × 86,511.40
  4. Step 4: Simplify right side
    133,750.60x = 17,356,427,485.26
  5. Step 5: Solve for x
    x = 17,356,427,485.26/133,750.60
  6. Step 6: Final answer
    x = 129,767.10

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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.