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Finding the Fourth Proportional to 81,080,838,000.45, 121,621,257,000.67 and 81,080,838,000.45

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Solution

The fourth proportional to 81,080,838,000.45, 121,621,257,000.67 and 81,080,838,000.45 is: 121,621,257,000.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,080,838,000.45 : 121,621,257,000.67 = 81,080,838,000.45 : x
  2. Step 2: Convert to fraction form
    81,080,838,000.45/121,621,257,000.67 = 81,080,838,000.45/x
  3. Step 3: Cross multiply
    81,080,838,000.45x = 121,621,257,000.67 × 81,080,838,000.45
  4. Step 4: Simplify right side
    81,080,838,000.45x = 9,861,153,436,282,419,937,280
  5. Step 5: Solve for x
    x = 9,861,153,436,282,419,937,280/81,080,838,000.45
  6. Step 6: Final answer
    x = 121,621,257,000.67

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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.