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Finding the Fourth Proportional to 121,107.96, 180,886.77 and 109,692.72

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Solution

The fourth proportional to 121,107.96, 180,886.77 and 109,692.72 is: 163,836.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,107.96 : 180,886.77 = 109,692.72 : x
  2. Step 2: Convert to fraction form
    121,107.96/180,886.77 = 109,692.72/x
  3. Step 3: Cross multiply
    121,107.96x = 180,886.77 × 109,692.72
  4. Step 4: Simplify right side
    121,107.96x = 19,841,961,813.31
  5. Step 5: Solve for x
    x = 19,841,961,813.31/121,107.96
  6. Step 6: Final answer
    x = 163,836.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.