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Finding the Fourth Proportional to 172,034.64, 258,087.85 and 86,693.49

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Solution

The fourth proportional to 172,034.64, 258,087.85 and 86,693.49 is: 130,058.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,034.64 : 258,087.85 = 86,693.49 : x
  2. Step 2: Convert to fraction form
    172,034.64/258,087.85 = 86,693.49/x
  3. Step 3: Cross multiply
    172,034.64x = 258,087.85 × 86,693.49
  4. Step 4: Simplify right side
    172,034.64x = 22,374,536,226.36
  5. Step 5: Solve for x
    x = 22,374,536,226.36/172,034.64
  6. Step 6: Final answer
    x = 130,058.32

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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.