Home / 80,513,152.40-120,769,728.60-68,042,003.60

Finding the Fourth Proportional to 80,513,152.40, 120,769,728.60 and 68,042,003.60

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Solution

The fourth proportional to 80,513,152.40, 120,769,728.60 and 68,042,003.60 is: 102,063,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,513,152.40 : 120,769,728.60 = 68,042,003.60 : x
  2. Step 2: Convert to fraction form
    80,513,152.40/120,769,728.60 = 68,042,003.60/x
  3. Step 3: Cross multiply
    80,513,152.40x = 120,769,728.60 × 68,042,003.60
  4. Step 4: Simplify right side
    80,513,152.40x = 8,217,414,308,172,222
  5. Step 5: Solve for x
    x = 8,217,414,308,172,222/80,513,152.40
  6. Step 6: Final answer
    x = 102,063,005.40

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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.