Home / 136,729.77-188,686.73-76,299.78

Finding the Fourth Proportional to 136,729.77, 188,686.73 and 76,299.78

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Solution

The fourth proportional to 136,729.77, 188,686.73 and 76,299.78 is: 105,293.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,729.77 : 188,686.73 = 76,299.78 : x
  2. Step 2: Convert to fraction form
    136,729.77/188,686.73 = 76,299.78/x
  3. Step 3: Cross multiply
    136,729.77x = 188,686.73 × 76,299.78
  4. Step 4: Simplify right side
    136,729.77x = 14,396,755,987.92
  5. Step 5: Solve for x
    x = 14,396,755,987.92/136,729.77
  6. Step 6: Final answer
    x = 105,293.50

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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.