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Finding the Fourth Proportional to 163,609.89, 245,417.90 and 51,287.60

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Solution

The fourth proportional to 163,609.89, 245,417.90 and 51,287.60 is: 76,932.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,609.89 : 245,417.90 = 51,287.60 : x
  2. Step 2: Convert to fraction form
    163,609.89/245,417.90 = 51,287.60/x
  3. Step 3: Cross multiply
    163,609.89x = 245,417.90 × 51,287.60
  4. Step 4: Simplify right side
    163,609.89x = 12,586,893,604.51
  5. Step 5: Solve for x
    x = 12,586,893,604.51/163,609.89
  6. Step 6: Final answer
    x = 76,932.35

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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.