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Finding the Fourth Proportional to 120,858.92, 166,830.22 and 103,794.64

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Solution

The fourth proportional to 120,858.92, 166,830.22 and 103,794.64 is: 143,275.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,858.92 : 166,830.22 = 103,794.64 : x
  2. Step 2: Convert to fraction form
    120,858.92/166,830.22 = 103,794.64/x
  3. Step 3: Cross multiply
    120,858.92x = 166,830.22 × 103,794.64
  4. Step 4: Simplify right side
    120,858.92x = 17,316,082,626.02
  5. Step 5: Solve for x
    x = 17,316,082,626.02/120,858.92
  6. Step 6: Final answer
    x = 143,275.17

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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.