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Finding the Fourth Proportional to 133,157.40, 199,736.10 and 127,908.60

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Solution

The fourth proportional to 133,157.40, 199,736.10 and 127,908.60 is: 191,862.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,157.40 : 199,736.10 = 127,908.60 : x
  2. Step 2: Convert to fraction form
    133,157.40/199,736.10 = 127,908.60/x
  3. Step 3: Cross multiply
    133,157.40x = 199,736.10 × 127,908.60
  4. Step 4: Simplify right side
    133,157.40x = 25,547,964,920.46
  5. Step 5: Solve for x
    x = 25,547,964,920.46/133,157.40
  6. Step 6: Final answer
    x = 191,862.90

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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.