Home / 139,371.39-192,348.66-130,821.15

Finding the Fourth Proportional to 139,371.39, 192,348.66 and 130,821.15

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Solution

The fourth proportional to 139,371.39, 192,348.66 and 130,821.15 is: 180,548.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,371.39 : 192,348.66 = 130,821.15 : x
  2. Step 2: Convert to fraction form
    139,371.39/192,348.66 = 130,821.15/x
  3. Step 3: Cross multiply
    139,371.39x = 192,348.66 × 130,821.15
  4. Step 4: Simplify right side
    139,371.39x = 25,163,272,902.16
  5. Step 5: Solve for x
    x = 25,163,272,902.16/139,371.39
  6. Step 6: Final answer
    x = 180,548.34

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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.