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Finding the Fourth Proportional to 119,283.91, 178,931.33 and 84,379.39

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Solution

The fourth proportional to 119,283.91, 178,931.33 and 84,379.39 is: 126,572.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,283.91 : 178,931.33 = 84,379.39 : x
  2. Step 2: Convert to fraction form
    119,283.91/178,931.33 = 84,379.39/x
  3. Step 3: Cross multiply
    119,283.91x = 178,931.33 × 84,379.39
  4. Step 4: Simplify right side
    119,283.91x = 15,098,115,924.49
  5. Step 5: Solve for x
    x = 15,098,115,924.49/119,283.91
  6. Step 6: Final answer
    x = 126,572.95

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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.