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Finding the Fourth Proportional to 128,767.02, 193,101.98 and 53,892.34

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Solution

The fourth proportional to 128,767.02, 193,101.98 and 53,892.34 is: 80,818.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,767.02 : 193,101.98 = 53,892.34 : x
  2. Step 2: Convert to fraction form
    128,767.02/193,101.98 = 53,892.34/x
  3. Step 3: Cross multiply
    128,767.02x = 193,101.98 × 53,892.34
  4. Step 4: Simplify right side
    128,767.02x = 10,406,716,808.62
  5. Step 5: Solve for x
    x = 10,406,716,808.62/128,767.02
  6. Step 6: Final answer
    x = 80,818.19

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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.