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Finding the Fourth Proportional to 172,384.47, 258,042.11 and 93,302.55

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Solution

The fourth proportional to 172,384.47, 258,042.11 and 93,302.55 is: 139,664.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,384.47 : 258,042.11 = 93,302.55 : x
  2. Step 2: Convert to fraction form
    172,384.47/258,042.11 = 93,302.55/x
  3. Step 3: Cross multiply
    172,384.47x = 258,042.11 × 93,302.55
  4. Step 4: Simplify right side
    172,384.47x = 24,075,986,403.87
  5. Step 5: Solve for x
    x = 24,075,986,403.87/172,384.47
  6. Step 6: Final answer
    x = 139,664.47

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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.