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Finding the Fourth Proportional to 123,379.53, 185,041.65 and 56,755.68

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Solution

The fourth proportional to 123,379.53, 185,041.65 and 56,755.68 is: 85,120.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,379.53 : 185,041.65 = 56,755.68 : x
  2. Step 2: Convert to fraction form
    123,379.53/185,041.65 = 56,755.68/x
  3. Step 3: Cross multiply
    123,379.53x = 185,041.65 × 56,755.68
  4. Step 4: Simplify right side
    123,379.53x = 10,502,164,674.07
  5. Step 5: Solve for x
    x = 10,502,164,674.07/123,379.53
  6. Step 6: Final answer
    x = 85,120.80

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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.