Home / 97,784.20-146,546.70-86,638.60

Finding the Fourth Proportional to 97,784.20, 146,546.70 and 86,638.60

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Solution

The fourth proportional to 97,784.20, 146,546.70 and 86,638.60 is: 129,843.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,784.20 : 146,546.70 = 86,638.60 : x
  2. Step 2: Convert to fraction form
    97,784.20/146,546.70 = 86,638.60/x
  3. Step 3: Cross multiply
    97,784.20x = 146,546.70 × 86,638.60
  4. Step 4: Simplify right side
    97,784.20x = 12,696,600,922.62
  5. Step 5: Solve for x
    x = 12,696,600,922.62/97,784.20
  6. Step 6: Final answer
    x = 129,843.07

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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.