Home / 139,988.80-193,185.45-76,327.66

Finding the Fourth Proportional to 139,988.80, 193,185.45 and 76,327.66

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Solution

The fourth proportional to 139,988.80, 193,185.45 and 76,327.66 is: 105,332.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,988.80 : 193,185.45 = 76,327.66 : x
  2. Step 2: Convert to fraction form
    139,988.80/193,185.45 = 76,327.66/x
  3. Step 3: Cross multiply
    139,988.80x = 193,185.45 × 76,327.66
  4. Step 4: Simplify right side
    139,988.80x = 14,745,393,344.55
  5. Step 5: Solve for x
    x = 14,745,393,344.55/139,988.80
  6. Step 6: Final answer
    x = 105,332.66

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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.