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Finding the Fourth Proportional to 172,911.92, 238,637.76 and 101,352.47

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Solution

The fourth proportional to 172,911.92, 238,637.76 and 101,352.47 is: 139,877.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,911.92 : 238,637.76 = 101,352.47 : x
  2. Step 2: Convert to fraction form
    172,911.92/238,637.76 = 101,352.47/x
  3. Step 3: Cross multiply
    172,911.92x = 238,637.76 × 101,352.47
  4. Step 4: Simplify right side
    172,911.92x = 24,186,526,411.27
  5. Step 5: Solve for x
    x = 24,186,526,411.27/172,911.92
  6. Step 6: Final answer
    x = 139,877.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.