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Finding the Fourth Proportional to 136,789.74, 188,762.01 and 76,364.22

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Solution

The fourth proportional to 136,789.74, 188,762.01 and 76,364.22 is: 105,378.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,789.74 : 188,762.01 = 76,364.22 : x
  2. Step 2: Convert to fraction form
    136,789.74/188,762.01 = 76,364.22/x
  3. Step 3: Cross multiply
    136,789.74x = 188,762.01 × 76,364.22
  4. Step 4: Simplify right side
    136,789.74x = 14,414,663,659.28
  5. Step 5: Solve for x
    x = 14,414,663,659.28/136,789.74
  6. Step 6: Final answer
    x = 105,378.25

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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.