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Finding the Fourth Proportional to 192,553.45, 288,655.21 and 87,315.01

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Solution

The fourth proportional to 192,553.45, 288,655.21 and 87,315.01 is: 130,893.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,553.45 : 288,655.21 = 87,315.01 : x
  2. Step 2: Convert to fraction form
    192,553.45/288,655.21 = 87,315.01/x
  3. Step 3: Cross multiply
    192,553.45x = 288,655.21 × 87,315.01
  4. Step 4: Simplify right side
    192,553.45x = 25,203,931,935.21
  5. Step 5: Solve for x
    x = 25,203,931,935.21/192,553.45
  6. Step 6: Final answer
    x = 130,893.17

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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.