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Finding the Fourth Proportional to 127,787.87, 176,348.43 and 70,429.28

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Solution

The fourth proportional to 127,787.87, 176,348.43 and 70,429.28 is: 97,193.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,787.87 : 176,348.43 = 70,429.28 : x
  2. Step 2: Convert to fraction form
    127,787.87/176,348.43 = 70,429.28/x
  3. Step 3: Cross multiply
    127,787.87x = 176,348.43 × 70,429.28
  4. Step 4: Simplify right side
    127,787.87x = 12,420,092,072.29
  5. Step 5: Solve for x
    x = 12,420,092,072.29/127,787.87
  6. Step 6: Final answer
    x = 97,193.05

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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.