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Finding the Fourth Proportional to 96,761, 144,879.02 and 84,805.40

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Solution

The fourth proportional to 96,761, 144,879.02 and 84,805.40 is: 126,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,761 : 144,879.02 = 84,805.40 : x
  2. Step 2: Convert to fraction form
    96,761/144,879.02 = 84,805.40/x
  3. Step 3: Cross multiply
    96,761x = 144,879.02 × 84,805.40
  4. Step 4: Simplify right side
    96,761x = 12,286,523,242.71
  5. Step 5: Solve for x
    x = 12,286,523,242.71/96,761
  6. Step 6: Final answer
    x = 126,978.05

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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.