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Finding the Fourth Proportional to 128,197.34, 176,797.40 and 106,758.07

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Solution

The fourth proportional to 128,197.34, 176,797.40 and 106,758.07 is: 147,230.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,197.34 : 176,797.40 = 106,758.07 : x
  2. Step 2: Convert to fraction form
    128,197.34/176,797.40 = 106,758.07/x
  3. Step 3: Cross multiply
    128,197.34x = 176,797.40 × 106,758.07
  4. Step 4: Simplify right side
    128,197.34x = 18,874,549,987.27
  5. Step 5: Solve for x
    x = 18,874,549,987.27/128,197.34
  6. Step 6: Final answer
    x = 147,230.44

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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.