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Finding the Fourth Proportional to 154,083.44, 212,663.04 and 99,702.56

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Solution

The fourth proportional to 154,083.44, 212,663.04 and 99,702.56 is: 137,607.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,083.44 : 212,663.04 = 99,702.56 : x
  2. Step 2: Convert to fraction form
    154,083.44/212,663.04 = 99,702.56/x
  3. Step 3: Cross multiply
    154,083.44x = 212,663.04 × 99,702.56
  4. Step 4: Simplify right side
    154,083.44x = 21,203,049,505.38
  5. Step 5: Solve for x
    x = 21,203,049,505.38/154,083.44
  6. Step 6: Final answer
    x = 137,607.58

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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.