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Finding the Fourth Proportional to 163,493.80, 245,111.10 and 89,621.80

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Solution

The fourth proportional to 163,493.80, 245,111.10 and 89,621.80 is: 134,361.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,493.80 : 245,111.10 = 89,621.80 : x
  2. Step 2: Convert to fraction form
    163,493.80/245,111.10 = 89,621.80/x
  3. Step 3: Cross multiply
    163,493.80x = 245,111.10 × 89,621.80
  4. Step 4: Simplify right side
    163,493.80x = 21,967,297,981.98
  5. Step 5: Solve for x
    x = 21,967,297,981.98/163,493.80
  6. Step 6: Final answer
    x = 134,361.66

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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.