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Finding the Fourth Proportional to 172,472.63, 258,710.11 and 65,827.82

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Solution

The fourth proportional to 172,472.63, 258,710.11 and 65,827.82 is: 98,742.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,472.63 : 258,710.11 = 65,827.82 : x
  2. Step 2: Convert to fraction form
    172,472.63/258,710.11 = 65,827.82/x
  3. Step 3: Cross multiply
    172,472.63x = 258,710.11 × 65,827.82
  4. Step 4: Simplify right side
    172,472.63x = 17,030,323,035.47
  5. Step 5: Solve for x
    x = 17,030,323,035.47/172,472.63
  6. Step 6: Final answer
    x = 98,742.18

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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.