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Finding the Fourth Proportional to 121,757.64, 182,636.52 and 79,902.51

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Solution

The fourth proportional to 121,757.64, 182,636.52 and 79,902.51 is: 119,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,757.64 : 182,636.52 = 79,902.51 : x
  2. Step 2: Convert to fraction form
    121,757.64/182,636.52 = 79,902.51/x
  3. Step 3: Cross multiply
    121,757.64x = 182,636.52 × 79,902.51
  4. Step 4: Simplify right side
    121,757.64x = 14,593,116,365.67
  5. Step 5: Solve for x
    x = 14,593,116,365.67/121,757.64
  6. Step 6: Final answer
    x = 119,853.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.