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Finding the Fourth Proportional to 187,409.80, 258,627.90 and 102,528.28

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Solution

The fourth proportional to 187,409.80, 258,627.90 and 102,528.28 is: 141,490.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,409.80 : 258,627.90 = 102,528.28 : x
  2. Step 2: Convert to fraction form
    187,409.80/258,627.90 = 102,528.28/x
  3. Step 3: Cross multiply
    187,409.80x = 258,627.90 × 102,528.28
  4. Step 4: Simplify right side
    187,409.80x = 26,516,673,747.01
  5. Step 5: Solve for x
    x = 26,516,673,747.01/187,409.80
  6. Step 6: Final answer
    x = 141,490.33

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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.