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Finding the Fourth Proportional to 164,015.60, 245,989.80 and 45,657.20

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Solution

The fourth proportional to 164,015.60, 245,989.80 and 45,657.20 is: 68,476.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,015.60 : 245,989.80 = 45,657.20 : x
  2. Step 2: Convert to fraction form
    164,015.60/245,989.80 = 45,657.20/x
  3. Step 3: Cross multiply
    164,015.60x = 245,989.80 × 45,657.20
  4. Step 4: Simplify right side
    164,015.60x = 11,231,205,496.56
  5. Step 5: Solve for x
    x = 11,231,205,496.56/164,015.60
  6. Step 6: Final answer
    x = 68,476.45

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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.