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Finding the Fourth Proportional to 163,965.60, 245,905.20 and 51,645.60

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Solution

The fourth proportional to 163,965.60, 245,905.20 and 51,645.60 is: 77,454.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,965.60 : 245,905.20 = 51,645.60 : x
  2. Step 2: Convert to fraction form
    163,965.60/245,905.20 = 51,645.60/x
  3. Step 3: Cross multiply
    163,965.60x = 245,905.20 × 51,645.60
  4. Step 4: Simplify right side
    163,965.60x = 12,699,921,597.12
  5. Step 5: Solve for x
    x = 12,699,921,597.12/163,965.60
  6. Step 6: Final answer
    x = 77,454.79

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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.