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Finding the Fourth Proportional to 145,154,080.80, 217,731,121.20 and 145,154,080.80

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Solution

The fourth proportional to 145,154,080.80, 217,731,121.20 and 145,154,080.80 is: 217,731,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,154,080.80 : 217,731,121.20 = 145,154,080.80 : x
  2. Step 2: Convert to fraction form
    145,154,080.80/217,731,121.20 = 145,154,080.80/x
  3. Step 3: Cross multiply
    145,154,080.80x = 217,731,121.20 × 145,154,080.80
  4. Step 4: Simplify right side
    145,154,080.80x = 31,604,560,759,339,392
  5. Step 5: Solve for x
    x = 31,604,560,759,339,392/145,154,080.80
  6. Step 6: Final answer
    x = 217,731,121.20

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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.