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Finding the Fourth Proportional to 80,534.40, 120,801.60 and 63,945.60

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Solution

The fourth proportional to 80,534.40, 120,801.60 and 63,945.60 is: 95,918.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,534.40 : 120,801.60 = 63,945.60 : x
  2. Step 2: Convert to fraction form
    80,534.40/120,801.60 = 63,945.60/x
  3. Step 3: Cross multiply
    80,534.40x = 120,801.60 × 63,945.60
  4. Step 4: Simplify right side
    80,534.40x = 7,724,730,792.96
  5. Step 5: Solve for x
    x = 7,724,730,792.96/80,534.40
  6. Step 6: Final answer
    x = 95,918.40

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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.