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Finding the Fourth Proportional to 172,989.90, 257,765.22 and 154,125

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Solution

The fourth proportional to 172,989.90, 257,765.22 and 154,125 is: 229,655.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,989.90 : 257,765.22 = 154,125 : x
  2. Step 2: Convert to fraction form
    172,989.90/257,765.22 = 154,125/x
  3. Step 3: Cross multiply
    172,989.90x = 257,765.22 × 154,125
  4. Step 4: Simplify right side
    172,989.90x = 39,728,064,532.50
  5. Step 5: Solve for x
    x = 39,728,064,532.50/172,989.90
  6. Step 6: Final answer
    x = 229,655.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.