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Finding the Fourth Proportional to 108,859.81, 150,218.24 and 61,103.93

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Solution

The fourth proportional to 108,859.81, 150,218.24 and 61,103.93 is: 84,318.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,859.81 : 150,218.24 = 61,103.93 : x
  2. Step 2: Convert to fraction form
    108,859.81/150,218.24 = 61,103.93/x
  3. Step 3: Cross multiply
    108,859.81x = 150,218.24 × 61,103.93
  4. Step 4: Simplify right side
    108,859.81x = 9,178,924,821.68
  5. Step 5: Solve for x
    x = 9,178,924,821.68/108,859.81
  6. Step 6: Final answer
    x = 84,318.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.