Home / 139,240.05-192,146.12-75,576.48

Finding the Fourth Proportional to 139,240.05, 192,146.12 and 75,576.48

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Solution

The fourth proportional to 139,240.05, 192,146.12 and 75,576.48 is: 104,292.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,240.05 : 192,146.12 = 75,576.48 : x
  2. Step 2: Convert to fraction form
    139,240.05/192,146.12 = 75,576.48/x
  3. Step 3: Cross multiply
    139,240.05x = 192,146.12 × 75,576.48
  4. Step 4: Simplify right side
    139,240.05x = 14,521,727,017.38
  5. Step 5: Solve for x
    x = 14,521,727,017.38/139,240.05
  6. Step 6: Final answer
    x = 104,292.74

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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.