Home / 219,749.12-303,151.50-129,076.10

Finding the Fourth Proportional to 219,749.12, 303,151.50 and 129,076.10

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Solution

The fourth proportional to 219,749.12, 303,151.50 and 129,076.10 is: 178,064.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,749.12 : 303,151.50 = 129,076.10 : x
  2. Step 2: Convert to fraction form
    219,749.12/303,151.50 = 129,076.10/x
  3. Step 3: Cross multiply
    219,749.12x = 303,151.50 × 129,076.10
  4. Step 4: Simplify right side
    219,749.12x = 39,129,613,329.15
  5. Step 5: Solve for x
    x = 39,129,613,329.15/219,749.12
  6. Step 6: Final answer
    x = 178,064.94

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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.