Home / 172,663.62-258,927.36-83,890.86

Finding the Fourth Proportional to 172,663.62, 258,927.36 and 83,890.86

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Solution

The fourth proportional to 172,663.62, 258,927.36 and 83,890.86 is: 125,803.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,663.62 : 258,927.36 = 83,890.86 : x
  2. Step 2: Convert to fraction form
    172,663.62/258,927.36 = 83,890.86/x
  3. Step 3: Cross multiply
    172,663.62x = 258,927.36 × 83,890.86
  4. Step 4: Simplify right side
    172,663.62x = 21,721,638,907.93
  5. Step 5: Solve for x
    x = 21,721,638,907.93/172,663.62
  6. Step 6: Final answer
    x = 125,803.22

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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.