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Finding the Fourth Proportional to 172,525.01, 258,898.16 and 83,730.11

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Solution

The fourth proportional to 172,525.01, 258,898.16 and 83,730.11 is: 125,648.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,525.01 : 258,898.16 = 83,730.11 : x
  2. Step 2: Convert to fraction form
    172,525.01/258,898.16 = 83,730.11/x
  3. Step 3: Cross multiply
    172,525.01x = 258,898.16 × 83,730.11
  4. Step 4: Simplify right side
    172,525.01x = 21,677,571,644.19
  5. Step 5: Solve for x
    x = 21,677,571,644.19/172,525.01
  6. Step 6: Final answer
    x = 125,648.86

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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.