Home / 288,105.96-432,158.92-77,743.56

Finding the Fourth Proportional to 288,105.96, 432,158.92 and 77,743.56

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Solution

The fourth proportional to 288,105.96, 432,158.92 and 77,743.56 is: 116,615.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,105.96 : 432,158.92 = 77,743.56 : x
  2. Step 2: Convert to fraction form
    288,105.96/432,158.92 = 77,743.56/x
  3. Step 3: Cross multiply
    288,105.96x = 432,158.92 × 77,743.56
  4. Step 4: Simplify right side
    288,105.96x = 33,597,572,926.56
  5. Step 5: Solve for x
    x = 33,597,572,926.56/288,105.96
  6. Step 6: Final answer
    x = 116,615.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.