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Finding the Fourth Proportional to 108,973.92, 150,367.74 and 61,218.18

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Solution

The fourth proportional to 108,973.92, 150,367.74 and 61,218.18 is: 84,471.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,973.92 : 150,367.74 = 61,218.18 : x
  2. Step 2: Convert to fraction form
    108,973.92/150,367.74 = 61,218.18/x
  3. Step 3: Cross multiply
    108,973.92x = 150,367.74 × 61,218.18
  4. Step 4: Simplify right side
    108,973.92x = 9,205,239,373.51
  5. Step 5: Solve for x
    x = 9,205,239,373.51/108,973.92
  6. Step 6: Final answer
    x = 84,471.95

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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.