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Finding the Fourth Proportional to 172,043.70, 258,065.55 and 109,058.10

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Solution

The fourth proportional to 172,043.70, 258,065.55 and 109,058.10 is: 163,587.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,043.70 : 258,065.55 = 109,058.10 : x
  2. Step 2: Convert to fraction form
    172,043.70/258,065.55 = 109,058.10/x
  3. Step 3: Cross multiply
    172,043.70x = 258,065.55 × 109,058.10
  4. Step 4: Simplify right side
    172,043.70x = 28,144,138,558.46
  5. Step 5: Solve for x
    x = 28,144,138,558.46/172,043.70
  6. Step 6: Final answer
    x = 163,587.15

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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.