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Finding the Fourth Proportional to 97,634.80, 146,452.20 and 90,636.40

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Solution

The fourth proportional to 97,634.80, 146,452.20 and 90,636.40 is: 135,954.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,634.80 : 146,452.20 = 90,636.40 : x
  2. Step 2: Convert to fraction form
    97,634.80/146,452.20 = 90,636.40/x
  3. Step 3: Cross multiply
    97,634.80x = 146,452.20 × 90,636.40
  4. Step 4: Simplify right side
    97,634.80x = 13,273,900,180.08
  5. Step 5: Solve for x
    x = 13,273,900,180.08/97,634.80
  6. Step 6: Final answer
    x = 135,954.60

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1.5x scale

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.