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Finding the Fourth Proportional to 163,907, 245,902.75 and 89,007.92

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Solution

The fourth proportional to 163,907, 245,902.75 and 89,007.92 is: 133,534.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,907 : 245,902.75 = 89,007.92 : x
  2. Step 2: Convert to fraction form
    163,907/245,902.75 = 89,007.92/x
  3. Step 3: Cross multiply
    163,907x = 245,902.75 × 89,007.92
  4. Step 4: Simplify right side
    163,907x = 21,887,292,299.78
  5. Step 5: Solve for x
    x = 21,887,292,299.78/163,907
  6. Step 6: Final answer
    x = 133,534.82

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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.