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Finding the Fourth Proportional to 136,762.59, 188,713.54 and 76,327.57

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Solution

The fourth proportional to 136,762.59, 188,713.54 and 76,327.57 is: 105,321.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,762.59 : 188,713.54 = 76,327.57 : x
  2. Step 2: Convert to fraction form
    136,762.59/188,713.54 = 76,327.57/x
  3. Step 3: Cross multiply
    136,762.59x = 188,713.54 × 76,327.57
  4. Step 4: Simplify right side
    136,762.59x = 14,404,045,934.30
  5. Step 5: Solve for x
    x = 14,404,045,934.30/136,762.59
  6. Step 6: Final answer
    x = 105,321.54

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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.