Home / 138,944.55-191,743.67-75,282.30

Finding the Fourth Proportional to 138,944.55, 191,743.67 and 75,282.30

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Solution

The fourth proportional to 138,944.55, 191,743.67 and 75,282.30 is: 103,889.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,944.55 : 191,743.67 = 75,282.30 : x
  2. Step 2: Convert to fraction form
    138,944.55/191,743.67 = 75,282.30/x
  3. Step 3: Cross multiply
    138,944.55x = 191,743.67 × 75,282.30
  4. Step 4: Simplify right side
    138,944.55x = 14,434,904,111.63
  5. Step 5: Solve for x
    x = 14,434,904,111.63/138,944.55
  6. Step 6: Final answer
    x = 103,889.67

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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.