Home / 231,097.20-318,881.88-129,118.32

Finding the Fourth Proportional to 231,097.20, 318,881.88 and 129,118.32

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Solution

The fourth proportional to 231,097.20, 318,881.88 and 129,118.32 is: 178,165.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,097.20 : 318,881.88 = 129,118.32 : x
  2. Step 2: Convert to fraction form
    231,097.20/318,881.88 = 129,118.32/x
  3. Step 3: Cross multiply
    231,097.20x = 318,881.88 × 129,118.32
  4. Step 4: Simplify right side
    231,097.20x = 41,173,492,624.04
  5. Step 5: Solve for x
    x = 41,173,492,624.04/231,097.20
  6. Step 6: Final answer
    x = 178,165.26

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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.