Home / 187,021.71-258,090.91-102,138.77

Finding the Fourth Proportional to 187,021.71, 258,090.91 and 102,138.77

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Solution

The fourth proportional to 187,021.71, 258,090.91 and 102,138.77 is: 140,952.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,021.71 : 258,090.91 = 102,138.77 : x
  2. Step 2: Convert to fraction form
    187,021.71/258,090.91 = 102,138.77/x
  3. Step 3: Cross multiply
    187,021.71x = 258,090.91 × 102,138.77
  4. Step 4: Simplify right side
    187,021.71x = 26,361,088,485.46
  5. Step 5: Solve for x
    x = 26,361,088,485.46/187,021.71
  6. Step 6: Final answer
    x = 140,952.02

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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.