Home / 139,989.88-193,186.02-76,327.84

Finding the Fourth Proportional to 139,989.88, 193,186.02 and 76,327.84

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Solution

The fourth proportional to 139,989.88, 193,186.02 and 76,327.84 is: 105,332.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,989.88 : 193,186.02 = 76,327.84 : x
  2. Step 2: Convert to fraction form
    139,989.88/193,186.02 = 76,327.84/x
  3. Step 3: Cross multiply
    139,989.88x = 193,186.02 × 76,327.84
  4. Step 4: Simplify right side
    139,989.88x = 14,745,471,624.80
  5. Step 5: Solve for x
    x = 14,745,471,624.80/139,989.88
  6. Step 6: Final answer
    x = 105,332.41

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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.