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Finding the Fourth Proportional to 128,776.02, 193,147.62 and 49,836.24

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Solution

The fourth proportional to 128,776.02, 193,147.62 and 49,836.24 is: 74,748.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,776.02 : 193,147.62 = 49,836.24 : x
  2. Step 2: Convert to fraction form
    128,776.02/193,147.62 = 49,836.24/x
  3. Step 3: Cross multiply
    128,776.02x = 193,147.62 × 49,836.24
  4. Step 4: Simplify right side
    128,776.02x = 9,625,751,145.75
  5. Step 5: Solve for x
    x = 9,625,751,145.75/128,776.02
  6. Step 6: Final answer
    x = 74,748.01

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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.