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Finding the Fourth Proportional to 163,915.60, 245,839.80 and 45,557.20

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Solution

The fourth proportional to 163,915.60, 245,839.80 and 45,557.20 is: 68,326.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,915.60 : 245,839.80 = 45,557.20 : x
  2. Step 2: Convert to fraction form
    163,915.60/245,839.80 = 45,557.20/x
  3. Step 3: Cross multiply
    163,915.60x = 245,839.80 × 45,557.20
  4. Step 4: Simplify right side
    163,915.60x = 11,199,772,936.56
  5. Step 5: Solve for x
    x = 11,199,772,936.56/163,915.60
  6. Step 6: Final answer
    x = 68,326.46

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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.