Home / 136,007.37-187,679.16-78,650.46

Finding the Fourth Proportional to 136,007.37, 187,679.16 and 78,650.46

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Solution

The fourth proportional to 136,007.37, 187,679.16 and 78,650.46 is: 108,531.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,007.37 : 187,679.16 = 78,650.46 : x
  2. Step 2: Convert to fraction form
    136,007.37/187,679.16 = 78,650.46/x
  3. Step 3: Cross multiply
    136,007.37x = 187,679.16 × 78,650.46
  4. Step 4: Simplify right side
    136,007.37x = 14,761,052,266.41
  5. Step 5: Solve for x
    x = 14,761,052,266.41/136,007.37
  6. Step 6: Final answer
    x = 108,531.27

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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.