Home / 172,370,165.72-258,553,544.58-78,970,644.18

Finding the Fourth Proportional to 172,370,165.72, 258,553,544.58 and 78,970,644.18

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Solution

The fourth proportional to 172,370,165.72, 258,553,544.58 and 78,970,644.18 is: 118,455,185.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,370,165.72 : 258,553,544.58 = 78,970,644.18 : x
  2. Step 2: Convert to fraction form
    172,370,165.72/258,553,544.58 = 78,970,644.18/x
  3. Step 3: Cross multiply
    172,370,165.72x = 258,553,544.58 × 78,970,644.18
  4. Step 4: Simplify right side
    172,370,165.72x = 20,418,139,970,504,952
  5. Step 5: Solve for x
    x = 20,418,139,970,504,952/172,370,165.72
  6. Step 6: Final answer
    x = 118,455,185.59

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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.