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Finding the Fourth Proportional to 128,851.80, 193,277.70 and 124,186.20

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Solution

The fourth proportional to 128,851.80, 193,277.70 and 124,186.20 is: 186,279.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,851.80 : 193,277.70 = 124,186.20 : x
  2. Step 2: Convert to fraction form
    128,851.80/193,277.70 = 124,186.20/x
  3. Step 3: Cross multiply
    128,851.80x = 193,277.70 × 124,186.20
  4. Step 4: Simplify right side
    128,851.80x = 24,002,423,107.74
  5. Step 5: Solve for x
    x = 24,002,423,107.74/128,851.80
  6. Step 6: Final answer
    x = 186,279.30

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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.