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Finding the Fourth Proportional to 515,149.71, 772,761.46 and 136,066.67

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Solution

The fourth proportional to 515,149.71, 772,761.46 and 136,066.67 is: 204,109.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,149.71 : 772,761.46 = 136,066.67 : x
  2. Step 2: Convert to fraction form
    515,149.71/772,761.46 = 136,066.67/x
  3. Step 3: Cross multiply
    515,149.71x = 772,761.46 × 136,066.67
  4. Step 4: Simplify right side
    515,149.71x = 105,147,074,362.56
  5. Step 5: Solve for x
    x = 105,147,074,362.56/515,149.71
  6. Step 6: Final answer
    x = 204,109.74

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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.