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Finding the Fourth Proportional to 172,777.69, 258,830.28 and 97,670.64

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Solution

The fourth proportional to 172,777.69, 258,830.28 and 97,670.64 is: 146,315.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,777.69 : 258,830.28 = 97,670.64 : x
  2. Step 2: Convert to fraction form
    172,777.69/258,830.28 = 97,670.64/x
  3. Step 3: Cross multiply
    172,777.69x = 258,830.28 × 97,670.64
  4. Step 4: Simplify right side
    172,777.69x = 25,280,120,069.59
  5. Step 5: Solve for x
    x = 25,280,120,069.59/172,777.69
  6. Step 6: Final answer
    x = 146,315.88

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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.