Home / 137,609.12-189,902.76-77,193.20

Finding the Fourth Proportional to 137,609.12, 189,902.76 and 77,193.20

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Solution

The fourth proportional to 137,609.12, 189,902.76 and 77,193.20 is: 106,527.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,609.12 : 189,902.76 = 77,193.20 : x
  2. Step 2: Convert to fraction form
    137,609.12/189,902.76 = 77,193.20/x
  3. Step 3: Cross multiply
    137,609.12x = 189,902.76 × 77,193.20
  4. Step 4: Simplify right side
    137,609.12x = 14,659,201,733.23
  5. Step 5: Solve for x
    x = 14,659,201,733.23/137,609.12
  6. Step 6: Final answer
    x = 106,527.84

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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.