Home / 129,241.96-178,353.06-72,653.80

Finding the Fourth Proportional to 129,241.96, 178,353.06 and 72,653.80

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Solution

The fourth proportional to 129,241.96, 178,353.06 and 72,653.80 is: 100,261.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,241.96 : 178,353.06 = 72,653.80 : x
  2. Step 2: Convert to fraction form
    129,241.96/178,353.06 = 72,653.80/x
  3. Step 3: Cross multiply
    129,241.96x = 178,353.06 × 72,653.80
  4. Step 4: Simplify right side
    129,241.96x = 12,958,027,550.63
  5. Step 5: Solve for x
    x = 12,958,027,550.63/129,241.96
  6. Step 6: Final answer
    x = 100,261.77

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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.