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Finding the Fourth Proportional to 119,351, 178,988.28 and 39,371.06

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Solution

The fourth proportional to 119,351, 178,988.28 and 39,371.06 is: 59,043.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,351 : 178,988.28 = 39,371.06 : x
  2. Step 2: Convert to fraction form
    119,351/178,988.28 = 39,371.06/x
  3. Step 3: Cross multiply
    119,351x = 178,988.28 × 39,371.06
  4. Step 4: Simplify right side
    119,351x = 7,046,958,311.18
  5. Step 5: Solve for x
    x = 7,046,958,311.18/119,351
  6. Step 6: Final answer
    x = 59,043.98

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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.