Home / 129,176.75-178,280.62-72,588.13

Finding the Fourth Proportional to 129,176.75, 178,280.62 and 72,588.13

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Solution

The fourth proportional to 129,176.75, 178,280.62 and 72,588.13 is: 100,181.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,176.75 : 178,280.62 = 72,588.13 : x
  2. Step 2: Convert to fraction form
    129,176.75/178,280.62 = 72,588.13/x
  3. Step 3: Cross multiply
    129,176.75x = 178,280.62 × 72,588.13
  4. Step 4: Simplify right side
    129,176.75x = 12,941,056,821.04
  5. Step 5: Solve for x
    x = 12,941,056,821.04/129,176.75
  6. Step 6: Final answer
    x = 100,181.01

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