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Finding the Fourth Proportional to 118,761.67, 178,143.68 and 30,015.19

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Solution

The fourth proportional to 118,761.67, 178,143.68 and 30,015.19 is: 45,023.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,761.67 : 178,143.68 = 30,015.19 : x
  2. Step 2: Convert to fraction form
    118,761.67/178,143.68 = 30,015.19/x
  3. Step 3: Cross multiply
    118,761.67x = 178,143.68 × 30,015.19
  4. Step 4: Simplify right side
    118,761.67x = 5,347,016,402.50
  5. Step 5: Solve for x
    x = 5,347,016,402.50/118,761.67
  6. Step 6: Final answer
    x = 45,023.08

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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.