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Finding the Fourth Proportional to 173,978,592.31, 260,795,510.02 and 81,697,137.49

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Solution

The fourth proportional to 173,978,592.31, 260,795,510.02 and 81,697,137.49 is: 122,464,760.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,978,592.31 : 260,795,510.02 = 81,697,137.49 : x
  2. Step 2: Convert to fraction form
    173,978,592.31/260,795,510.02 = 81,697,137.49/x
  3. Step 3: Cross multiply
    173,978,592.31x = 260,795,510.02 × 81,697,137.49
  4. Step 4: Simplify right side
    173,978,592.31x = 21,306,246,638,878,612
  5. Step 5: Solve for x
    x = 21,306,246,638,878,612/173,978,592.31
  6. Step 6: Final answer
    x = 122,464,760.50

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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.