Home / 139,331.18-192,356.73-91,722.92

Finding the Fourth Proportional to 139,331.18, 192,356.73 and 91,722.92

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Solution

The fourth proportional to 139,331.18, 192,356.73 and 91,722.92 is: 126,630.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,331.18 : 192,356.73 = 91,722.92 : x
  2. Step 2: Convert to fraction form
    139,331.18/192,356.73 = 91,722.92/x
  3. Step 3: Cross multiply
    139,331.18x = 192,356.73 × 91,722.92
  4. Step 4: Simplify right side
    139,331.18x = 17,643,521,438.14
  5. Step 5: Solve for x
    x = 17,643,521,438.14/139,331.18
  6. Step 6: Final answer
    x = 126,630.10

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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.