Home / 130,428.96-179,927.88-85,086

Finding the Fourth Proportional to 130,428.96, 179,927.88 and 85,086

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Solution

The fourth proportional to 130,428.96, 179,927.88 and 85,086 is: 117,376.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,428.96 : 179,927.88 = 85,086 : x
  2. Step 2: Convert to fraction form
    130,428.96/179,927.88 = 85,086/x
  3. Step 3: Cross multiply
    130,428.96x = 179,927.88 × 85,086
  4. Step 4: Simplify right side
    130,428.96x = 15,309,343,597.68
  5. Step 5: Solve for x
    x = 15,309,343,597.68/130,428.96
  6. Step 6: Final answer
    x = 117,376.87

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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.