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Finding the Fourth Proportional to 120,105.04, 165,750.24 and 74,809.84

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Solution

The fourth proportional to 120,105.04, 165,750.24 and 74,809.84 is: 103,240.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,105.04 : 165,750.24 = 74,809.84 : x
  2. Step 2: Convert to fraction form
    120,105.04/165,750.24 = 74,809.84/x
  3. Step 3: Cross multiply
    120,105.04x = 165,750.24 × 74,809.84
  4. Step 4: Simplify right side
    120,105.04x = 12,399,748,934.36
  5. Step 5: Solve for x
    x = 12,399,748,934.36/120,105.04
  6. Step 6: Final answer
    x = 103,240.87

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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.