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Finding the Fourth Proportional to 133,087.40, 199,055.10 and 119,148.20

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Solution

The fourth proportional to 133,087.40, 199,055.10 and 119,148.20 is: 178,206.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,087.40 : 199,055.10 = 119,148.20 : x
  2. Step 2: Convert to fraction form
    133,087.40/199,055.10 = 119,148.20/x
  3. Step 3: Cross multiply
    133,087.40x = 199,055.10 × 119,148.20
  4. Step 4: Simplify right side
    133,087.40x = 23,717,056,865.82
  5. Step 5: Solve for x
    x = 23,717,056,865.82/133,087.40
  6. Step 6: Final answer
    x = 178,206.63

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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.