Home / 97,830.20-146,615.70-86,684.60

Finding the Fourth Proportional to 97,830.20, 146,615.70 and 86,684.60

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Solution

The fourth proportional to 97,830.20, 146,615.70 and 86,684.60 is: 129,912.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,830.20 : 146,615.70 = 86,684.60 : x
  2. Step 2: Convert to fraction form
    97,830.20/146,615.70 = 86,684.60/x
  3. Step 3: Cross multiply
    97,830.20x = 146,615.70 × 86,684.60
  4. Step 4: Simplify right side
    97,830.20x = 12,709,323,308.22
  5. Step 5: Solve for x
    x = 12,709,323,308.22/97,830.20
  6. Step 6: Final answer
    x = 129,912.07

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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.