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Finding the Fourth Proportional to 151,880.86, 209,607.08 and 87,369.85

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Solution

The fourth proportional to 151,880.86, 209,607.08 and 87,369.85 is: 120,577.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,880.86 : 209,607.08 = 87,369.85 : x
  2. Step 2: Convert to fraction form
    151,880.86/209,607.08 = 87,369.85/x
  3. Step 3: Cross multiply
    151,880.86x = 209,607.08 × 87,369.85
  4. Step 4: Simplify right side
    151,880.86x = 18,313,339,138.54
  5. Step 5: Solve for x
    x = 18,313,339,138.54/151,880.86
  6. Step 6: Final answer
    x = 120,577.00

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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.