Home / 131,376.48-181,314-74,778.72

Finding the Fourth Proportional to 131,376.48, 181,314 and 74,778.72

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Solution

The fourth proportional to 131,376.48, 181,314 and 74,778.72 is: 103,202.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,376.48 : 181,314 = 74,778.72 : x
  2. Step 2: Convert to fraction form
    131,376.48/181,314 = 74,778.72/x
  3. Step 3: Cross multiply
    131,376.48x = 181,314 × 74,778.72
  4. Step 4: Simplify right side
    131,376.48x = 13,558,428,838.08
  5. Step 5: Solve for x
    x = 13,558,428,838.08/131,376.48
  6. Step 6: Final answer
    x = 103,202.86

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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.