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Finding the Fourth Proportional to 108,970.77, 150,363.72 and 61,214.61

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Solution

The fourth proportional to 108,970.77, 150,363.72 and 61,214.61 is: 84,467.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,970.77 : 150,363.72 = 61,214.61 : x
  2. Step 2: Convert to fraction form
    108,970.77/150,363.72 = 61,214.61/x
  3. Step 3: Cross multiply
    108,970.77x = 150,363.72 × 61,214.61
  4. Step 4: Simplify right side
    108,970.77x = 9,204,456,477.95
  5. Step 5: Solve for x
    x = 9,204,456,477.95/108,970.77
  6. Step 6: Final answer
    x = 84,467.21

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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.