Home / 231,117.44-318,909.96-129,130.16

Finding the Fourth Proportional to 231,117.44, 318,909.96 and 129,130.16

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Solution

The fourth proportional to 231,117.44, 318,909.96 and 129,130.16 is: 178,181.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,117.44 : 318,909.96 = 129,130.16 : x
  2. Step 2: Convert to fraction form
    231,117.44/318,909.96 = 129,130.16/x
  3. Step 3: Cross multiply
    231,117.44x = 318,909.96 × 129,130.16
  4. Step 4: Simplify right side
    231,117.44x = 41,180,894,160.39
  5. Step 5: Solve for x
    x = 41,180,894,160.39/231,117.44
  6. Step 6: Final answer
    x = 178,181.68

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1.5x scale

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.