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Finding the Fourth Proportional to 80,567.60, 120,851.40 and 68,644.40

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Solution

The fourth proportional to 80,567.60, 120,851.40 and 68,644.40 is: 102,966.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,567.60 : 120,851.40 = 68,644.40 : x
  2. Step 2: Convert to fraction form
    80,567.60/120,851.40 = 68,644.40/x
  3. Step 3: Cross multiply
    80,567.60x = 120,851.40 × 68,644.40
  4. Step 4: Simplify right side
    80,567.60x = 8,295,771,842.16
  5. Step 5: Solve for x
    x = 8,295,771,842.16/80,567.60
  6. Step 6: Final answer
    x = 102,966.60

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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.