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Finding the Fourth Proportional to 136,167.78, 187,900.56 and 75,738.54

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Solution

The fourth proportional to 136,167.78, 187,900.56 and 75,738.54 is: 104,513.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,167.78 : 187,900.56 = 75,738.54 : x
  2. Step 2: Convert to fraction form
    136,167.78/187,900.56 = 75,738.54/x
  3. Step 3: Cross multiply
    136,167.78x = 187,900.56 × 75,738.54
  4. Step 4: Simplify right side
    136,167.78x = 14,231,314,079.58
  5. Step 5: Solve for x
    x = 14,231,314,079.58/136,167.78
  6. Step 6: Final answer
    x = 104,513.08

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1.5x scale

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.