Home / 129,303.48-178,463.39-80,927.89

Finding the Fourth Proportional to 129,303.48, 178,463.39 and 80,927.89

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Solution

The fourth proportional to 129,303.48, 178,463.39 and 80,927.89 is: 111,695.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,303.48 : 178,463.39 = 80,927.89 : x
  2. Step 2: Convert to fraction form
    129,303.48/178,463.39 = 80,927.89/x
  3. Step 3: Cross multiply
    129,303.48x = 178,463.39 × 80,927.89
  4. Step 4: Simplify right side
    129,303.48x = 14,442,664,744.15
  5. Step 5: Solve for x
    x = 14,442,664,744.15/129,303.48
  6. Step 6: Final answer
    x = 111,695.87

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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.