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Finding the Fourth Proportional to 122,052.09, 168,510.20 and 83,799.30

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Solution

The fourth proportional to 122,052.09, 168,510.20 and 83,799.30 is: 115,696.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,052.09 : 168,510.20 = 83,799.30 : x
  2. Step 2: Convert to fraction form
    122,052.09/168,510.20 = 83,799.30/x
  3. Step 3: Cross multiply
    122,052.09x = 168,510.20 × 83,799.30
  4. Step 4: Simplify right side
    122,052.09x = 14,121,036,383.86
  5. Step 5: Solve for x
    x = 14,121,036,383.86/122,052.09
  6. Step 6: Final answer
    x = 115,696.80

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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.