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Finding the Fourth Proportional to 136,900.50, 189,009.35 and 93,951.87

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Solution

The fourth proportional to 136,900.50, 189,009.35 and 93,951.87 is: 129,713.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,900.50 : 189,009.35 = 93,951.87 : x
  2. Step 2: Convert to fraction form
    136,900.50/189,009.35 = 93,951.87/x
  3. Step 3: Cross multiply
    136,900.50x = 189,009.35 × 93,951.87
  4. Step 4: Simplify right side
    136,900.50x = 17,757,781,410.23
  5. Step 5: Solve for x
    x = 17,757,781,410.23/136,900.50
  6. Step 6: Final answer
    x = 129,713.05

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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.