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Finding the Fourth Proportional to 172,059.63, 258,222.06 and 86,757.63

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Solution

The fourth proportional to 172,059.63, 258,222.06 and 86,757.63 is: 130,203.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,059.63 : 258,222.06 = 86,757.63 : x
  2. Step 2: Convert to fraction form
    172,059.63/258,222.06 = 86,757.63/x
  3. Step 3: Cross multiply
    172,059.63x = 258,222.06 × 86,757.63
  4. Step 4: Simplify right side
    172,059.63x = 22,402,733,939.32
  5. Step 5: Solve for x
    x = 22,402,733,939.32/172,059.63
  6. Step 6: Final answer
    x = 130,203.31

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1.5x scale

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.