Home / 231,074.28-318,876.62-129,100.50

Finding the Fourth Proportional to 231,074.28, 318,876.62 and 129,100.50

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Solution

The fourth proportional to 231,074.28, 318,876.62 and 129,100.50 is: 178,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,074.28 : 318,876.62 = 129,100.50 : x
  2. Step 2: Convert to fraction form
    231,074.28/318,876.62 = 129,100.50/x
  3. Step 3: Cross multiply
    231,074.28x = 318,876.62 × 129,100.50
  4. Step 4: Simplify right side
    231,074.28x = 41,167,130,434.81
  5. Step 5: Solve for x
    x = 41,167,130,434.81/231,074.28
  6. Step 6: Final answer
    x = 178,155.40

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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.