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Finding the Fourth Proportional to 150,564.51, 207,770.94 and 86,898.51

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Solution

The fourth proportional to 150,564.51, 207,770.94 and 86,898.51 is: 119,915.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,564.51 : 207,770.94 = 86,898.51 : x
  2. Step 2: Convert to fraction form
    150,564.51/207,770.94 = 86,898.51/x
  3. Step 3: Cross multiply
    150,564.51x = 207,770.94 × 86,898.51
  4. Step 4: Simplify right side
    150,564.51x = 18,054,985,107.30
  5. Step 5: Solve for x
    x = 18,054,985,107.30/150,564.51
  6. Step 6: Final answer
    x = 119,915.28

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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.