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Finding the Fourth Proportional to 176,253.23, 243,203.81 and 100,787.15

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Solution

The fourth proportional to 176,253.23, 243,203.81 and 100,787.15 is: 139,071.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,253.23 : 243,203.81 = 100,787.15 : x
  2. Step 2: Convert to fraction form
    176,253.23/243,203.81 = 100,787.15/x
  3. Step 3: Cross multiply
    176,253.23x = 243,203.81 × 100,787.15
  4. Step 4: Simplify right side
    176,253.23x = 24,511,818,983.12
  5. Step 5: Solve for x
    x = 24,511,818,983.12/176,253.23
  6. Step 6: Final answer
    x = 139,071.60

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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.