Home / 136,738.12-188,708.06-76,320.52

Finding the Fourth Proportional to 136,738.12, 188,708.06 and 76,320.52

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Solution

The fourth proportional to 136,738.12, 188,708.06 and 76,320.52 is: 105,327.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,738.12 : 188,708.06 = 76,320.52 : x
  2. Step 2: Convert to fraction form
    136,738.12/188,708.06 = 76,320.52/x
  3. Step 3: Cross multiply
    136,738.12x = 188,708.06 × 76,320.52
  4. Step 4: Simplify right side
    136,738.12x = 14,402,297,267.39
  5. Step 5: Solve for x
    x = 14,402,297,267.39/136,738.12
  6. Step 6: Final answer
    x = 105,327.59

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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.