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Finding the Fourth Proportional to 108,725.04, 149,976.84 and 68,374.80

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Solution

The fourth proportional to 108,725.04, 149,976.84 and 68,374.80 is: 94,317.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,725.04 : 149,976.84 = 68,374.80 : x
  2. Step 2: Convert to fraction form
    108,725.04/149,976.84 = 68,374.80/x
  3. Step 3: Cross multiply
    108,725.04x = 149,976.84 × 68,374.80
  4. Step 4: Simplify right side
    108,725.04x = 10,254,636,439.63
  5. Step 5: Solve for x
    x = 10,254,636,439.63/108,725.04
  6. Step 6: Final answer
    x = 94,317.15

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1.5x scale

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.