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Finding the Fourth Proportional to 151,452.36, 209,005.11 and 87,827.94

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Solution

The fourth proportional to 151,452.36, 209,005.11 and 87,827.94 is: 121,203.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,452.36 : 209,005.11 = 87,827.94 : x
  2. Step 2: Convert to fraction form
    151,452.36/209,005.11 = 87,827.94/x
  3. Step 3: Cross multiply
    151,452.36x = 209,005.11 × 87,827.94
  4. Step 4: Simplify right side
    151,452.36x = 18,356,488,260.77
  5. Step 5: Solve for x
    x = 18,356,488,260.77/151,452.36
  6. Step 6: Final answer
    x = 121,203.05

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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.