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Finding the Fourth Proportional to 114,857.94, 171,627.99 and 87,689.94

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Solution

The fourth proportional to 114,857.94, 171,627.99 and 87,689.94 is: 131,031.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,857.94 : 171,627.99 = 87,689.94 : x
  2. Step 2: Convert to fraction form
    114,857.94/171,627.99 = 87,689.94/x
  3. Step 3: Cross multiply
    114,857.94x = 171,627.99 × 87,689.94
  4. Step 4: Simplify right side
    114,857.94x = 15,050,048,145.42
  5. Step 5: Solve for x
    x = 15,050,048,145.42/114,857.94
  6. Step 6: Final answer
    x = 131,031.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.