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Finding the Fourth Proportional to 136,133.76, 187,876.06 and 75,716.07

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Solution

The fourth proportional to 136,133.76, 187,876.06 and 75,716.07 is: 104,494.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,133.76 : 187,876.06 = 75,716.07 : x
  2. Step 2: Convert to fraction form
    136,133.76/187,876.06 = 75,716.07/x
  3. Step 3: Cross multiply
    136,133.76x = 187,876.06 × 75,716.07
  4. Step 4: Simplify right side
    136,133.76x = 14,225,236,016.46
  5. Step 5: Solve for x
    x = 14,225,236,016.46/136,133.76
  6. Step 6: Final answer
    x = 104,494.55

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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.