Home / 136,748.39-188,722.24-76,330.80

Finding the Fourth Proportional to 136,748.39, 188,722.24 and 76,330.80

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Solution

The fourth proportional to 136,748.39, 188,722.24 and 76,330.80 is: 105,341.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,748.39 : 188,722.24 = 76,330.80 : x
  2. Step 2: Convert to fraction form
    136,748.39/188,722.24 = 76,330.80/x
  3. Step 3: Cross multiply
    136,748.39x = 188,722.24 × 76,330.80
  4. Step 4: Simplify right side
    136,748.39x = 14,405,319,366.17
  5. Step 5: Solve for x
    x = 14,405,319,366.17/136,748.39
  6. Step 6: Final answer
    x = 105,341.79

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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.