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Finding the Fourth Proportional to 136,703.64, 188,650.76 and 76,270.69

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Solution

The fourth proportional to 136,703.64, 188,650.76 and 76,270.69 is: 105,253.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,703.64 : 188,650.76 = 76,270.69 : x
  2. Step 2: Convert to fraction form
    136,703.64/188,650.76 = 76,270.69/x
  3. Step 3: Cross multiply
    136,703.64x = 188,650.76 × 76,270.69
  4. Step 4: Simplify right side
    136,703.64x = 14,388,523,634.22
  5. Step 5: Solve for x
    x = 14,388,523,634.22/136,703.64
  6. Step 6: Final answer
    x = 105,253.41

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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.