Home / 131,316.32-181,195.44-74,728.64

Finding the Fourth Proportional to 131,316.32, 181,195.44 and 74,728.64

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Solution

The fourth proportional to 131,316.32, 181,195.44 and 74,728.64 is: 103,113.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,316.32 : 181,195.44 = 74,728.64 : x
  2. Step 2: Convert to fraction form
    131,316.32/181,195.44 = 74,728.64/x
  3. Step 3: Cross multiply
    131,316.32x = 181,195.44 × 74,728.64
  4. Step 4: Simplify right side
    131,316.32x = 13,540,488,805.40
  5. Step 5: Solve for x
    x = 13,540,488,805.40/131,316.32
  6. Step 6: Final answer
    x = 103,113.53

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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.