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Finding the Fourth Proportional to 187,373.70, 258,573.60 and 102,489.75

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Solution

The fourth proportional to 187,373.70, 258,573.60 and 102,489.75 is: 141,434.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,373.70 : 258,573.60 = 102,489.75 : x
  2. Step 2: Convert to fraction form
    187,373.70/258,573.60 = 102,489.75/x
  3. Step 3: Cross multiply
    187,373.70x = 258,573.60 × 102,489.75
  4. Step 4: Simplify right side
    187,373.70x = 26,501,143,620.60
  5. Step 5: Solve for x
    x = 26,501,143,620.60/187,373.70
  6. Step 6: Final answer
    x = 141,434.70

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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.