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Finding the Fourth Proportional to 121,093.70, 181,640.55 and 106,319.30

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Solution

The fourth proportional to 121,093.70, 181,640.55 and 106,319.30 is: 159,478.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,093.70 : 181,640.55 = 106,319.30 : x
  2. Step 2: Convert to fraction form
    121,093.70/181,640.55 = 106,319.30/x
  3. Step 3: Cross multiply
    121,093.70x = 181,640.55 × 106,319.30
  4. Step 4: Simplify right side
    121,093.70x = 19,311,896,127.62
  5. Step 5: Solve for x
    x = 19,311,896,127.62/121,093.70
  6. Step 6: Final answer
    x = 159,478.95

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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.