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Finding the Fourth Proportional to 163,929.60, 245,860.80 and 45,571.20

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Solution

The fourth proportional to 163,929.60, 245,860.80 and 45,571.20 is: 68,347.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,929.60 : 245,860.80 = 45,571.20 : x
  2. Step 2: Convert to fraction form
    163,929.60/245,860.80 = 45,571.20/x
  3. Step 3: Cross multiply
    163,929.60x = 245,860.80 × 45,571.20
  4. Step 4: Simplify right side
    163,929.60x = 11,204,171,688.96
  5. Step 5: Solve for x
    x = 11,204,171,688.96/163,929.60
  6. Step 6: Final answer
    x = 68,347.46

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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.