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Finding the Fourth Proportional to 187,503.96, 258,762.06 and 102,621

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Solution

The fourth proportional to 187,503.96, 258,762.06 and 102,621 is: 141,620.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,503.96 : 258,762.06 = 102,621 : x
  2. Step 2: Convert to fraction form
    187,503.96/258,762.06 = 102,621/x
  3. Step 3: Cross multiply
    187,503.96x = 258,762.06 × 102,621
  4. Step 4: Simplify right side
    187,503.96x = 26,554,421,359.26
  5. Step 5: Solve for x
    x = 26,554,421,359.26/187,503.96
  6. Step 6: Final answer
    x = 141,620.59

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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.