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Finding the Fourth Proportional to 149,081.61, 223,623.64 and 54,379.65

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Solution

The fourth proportional to 149,081.61, 223,623.64 and 54,379.65 is: 81,569.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,081.61 : 223,623.64 = 54,379.65 : x
  2. Step 2: Convert to fraction form
    149,081.61/223,623.64 = 54,379.65/x
  3. Step 3: Cross multiply
    149,081.61x = 223,623.64 × 54,379.65
  4. Step 4: Simplify right side
    149,081.61x = 12,160,575,875.60
  5. Step 5: Solve for x
    x = 12,160,575,875.60/149,081.61
  6. Step 6: Final answer
    x = 81,569.92

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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.