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Finding the Fourth Proportional to 153,772.44, 212,195.43 and 89,243.55

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Solution

The fourth proportional to 153,772.44, 212,195.43 and 89,243.55 is: 123,149.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,772.44 : 212,195.43 = 89,243.55 : x
  2. Step 2: Convert to fraction form
    153,772.44/212,195.43 = 89,243.55/x
  3. Step 3: Cross multiply
    153,772.44x = 212,195.43 × 89,243.55
  4. Step 4: Simplify right side
    153,772.44x = 18,937,073,466.98
  5. Step 5: Solve for x
    x = 18,937,073,466.98/153,772.44
  6. Step 6: Final answer
    x = 123,149.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.