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Finding the Fourth Proportional to 122,190.99, 168,540.75 and 99,530.94

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Solution

The fourth proportional to 122,190.99, 168,540.75 and 99,530.94 is: 137,285.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,190.99 : 168,540.75 = 99,530.94 : x
  2. Step 2: Convert to fraction form
    122,190.99/168,540.75 = 99,530.94/x
  3. Step 3: Cross multiply
    122,190.99x = 168,540.75 × 99,530.94
  4. Step 4: Simplify right side
    122,190.99x = 16,775,019,275.81
  5. Step 5: Solve for x
    x = 16,775,019,275.81/122,190.99
  6. Step 6: Final answer
    x = 137,285.24

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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.