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Finding the Fourth Proportional to 80,829,421.60, 121,244,132.40 and 80,829,421.60

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Solution

The fourth proportional to 80,829,421.60, 121,244,132.40 and 80,829,421.60 is: 121,244,132.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,829,421.60 : 121,244,132.40 = 80,829,421.60 : x
  2. Step 2: Convert to fraction form
    80,829,421.60/121,244,132.40 = 80,829,421.60/x
  3. Step 3: Cross multiply
    80,829,421.60x = 121,244,132.40 × 80,829,421.60
  4. Step 4: Simplify right side
    80,829,421.60x = 9,800,093,094,285,820
  5. Step 5: Solve for x
    x = 9,800,093,094,285,820/80,829,421.60
  6. Step 6: Final answer
    x = 121,244,132.40

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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.