Home / 117,318.32-161,839.88-74,225.52

Finding the Fourth Proportional to 117,318.32, 161,839.88 and 74,225.52

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Solution

The fourth proportional to 117,318.32, 161,839.88 and 74,225.52 is: 102,393.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,318.32 : 161,839.88 = 74,225.52 : x
  2. Step 2: Convert to fraction form
    117,318.32/161,839.88 = 74,225.52/x
  3. Step 3: Cross multiply
    117,318.32x = 161,839.88 × 74,225.52
  4. Step 4: Simplify right side
    117,318.32x = 12,012,649,249.74
  5. Step 5: Solve for x
    x = 12,012,649,249.74/117,318.32
  6. Step 6: Final answer
    x = 102,393.64

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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.