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Finding the Fourth Proportional to 147,134.19, 220,723.25 and 68,256.39

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Solution

The fourth proportional to 147,134.19, 220,723.25 and 68,256.39 is: 102,394.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,134.19 : 220,723.25 = 68,256.39 : x
  2. Step 2: Convert to fraction form
    147,134.19/220,723.25 = 68,256.39/x
  3. Step 3: Cross multiply
    147,134.19x = 220,723.25 × 68,256.39
  4. Step 4: Simplify right side
    147,134.19x = 15,065,771,892.79
  5. Step 5: Solve for x
    x = 15,065,771,892.79/147,134.19
  6. Step 6: Final answer
    x = 102,394.77

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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.