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Finding the Fourth Proportional to 141,833.60, 212,750.40 and 86,537.60

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Solution

The fourth proportional to 141,833.60, 212,750.40 and 86,537.60 is: 129,806.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,833.60 : 212,750.40 = 86,537.60 : x
  2. Step 2: Convert to fraction form
    141,833.60/212,750.40 = 86,537.60/x
  3. Step 3: Cross multiply
    141,833.60x = 212,750.40 × 86,537.60
  4. Step 4: Simplify right side
    141,833.60x = 18,410,909,015.04
  5. Step 5: Solve for x
    x = 18,410,909,015.04/141,833.60
  6. Step 6: Final answer
    x = 129,806.40

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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.