Home / 129,664.50-178,937.04-73,077.90

Finding the Fourth Proportional to 129,664.50, 178,937.04 and 73,077.90

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Solution

The fourth proportional to 129,664.50, 178,937.04 and 73,077.90 is: 100,847.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,664.50 : 178,937.04 = 73,077.90 : x
  2. Step 2: Convert to fraction form
    129,664.50/178,937.04 = 73,077.90/x
  3. Step 3: Cross multiply
    129,664.50x = 178,937.04 × 73,077.90
  4. Step 4: Simplify right side
    129,664.50x = 13,076,343,115.42
  5. Step 5: Solve for x
    x = 13,076,343,115.42/129,664.50
  6. Step 6: Final answer
    x = 100,847.52

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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.