Home / 128,013.71-192,045.32-49,121.79

Finding the Fourth Proportional to 128,013.71, 192,045.32 and 49,121.79

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Solution

The fourth proportional to 128,013.71, 192,045.32 and 49,121.79 is: 73,692.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,013.71 : 192,045.32 = 49,121.79 : x
  2. Step 2: Convert to fraction form
    128,013.71/192,045.32 = 49,121.79/x
  3. Step 3: Cross multiply
    128,013.71x = 192,045.32 × 49,121.79
  4. Step 4: Simplify right side
    128,013.71x = 9,433,609,633.91
  5. Step 5: Solve for x
    x = 9,433,609,633.91/128,013.71
  6. Step 6: Final answer
    x = 73,692.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.