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Finding the Fourth Proportional to 120,005.70, 165,765.87 and 92,056.38

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Solution

The fourth proportional to 120,005.70, 165,765.87 and 92,056.38 is: 127,159.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,005.70 : 165,765.87 = 92,056.38 : x
  2. Step 2: Convert to fraction form
    120,005.70/165,765.87 = 92,056.38/x
  3. Step 3: Cross multiply
    120,005.70x = 165,765.87 × 92,056.38
  4. Step 4: Simplify right side
    120,005.70x = 15,259,805,919.75
  5. Step 5: Solve for x
    x = 15,259,805,919.75/120,005.70
  6. Step 6: Final answer
    x = 127,159.01

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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.