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Finding the Fourth Proportional to 115,999.68, 174,000.54 and 45,879

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Solution

The fourth proportional to 115,999.68, 174,000.54 and 45,879 is: 68,818.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,999.68 : 174,000.54 = 45,879 : x
  2. Step 2: Convert to fraction form
    115,999.68/174,000.54 = 45,879/x
  3. Step 3: Cross multiply
    115,999.68x = 174,000.54 × 45,879
  4. Step 4: Simplify right side
    115,999.68x = 7,982,970,774.66
  5. Step 5: Solve for x
    x = 7,982,970,774.66/115,999.68
  6. Step 6: Final answer
    x = 68,818.90

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1.5x scale

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.