Home / 187,389.86-258,615.81-102,519.68

Finding the Fourth Proportional to 187,389.86, 258,615.81 and 102,519.68

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Solution

The fourth proportional to 187,389.86, 258,615.81 and 102,519.68 is: 141,486.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,389.86 : 258,615.81 = 102,519.68 : x
  2. Step 2: Convert to fraction form
    187,389.86/258,615.81 = 102,519.68/x
  3. Step 3: Cross multiply
    187,389.86x = 258,615.81 × 102,519.68
  4. Step 4: Simplify right side
    187,389.86x = 26,513,208,791.06
  5. Step 5: Solve for x
    x = 26,513,208,791.06/187,389.86
  6. Step 6: Final answer
    x = 141,486.90

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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.