Home / 101,008.18-139,392.26-55,687.78

Finding the Fourth Proportional to 101,008.18, 139,392.26 and 55,687.78

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Solution

The fourth proportional to 101,008.18, 139,392.26 and 55,687.78 is: 76,849.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,008.18 : 139,392.26 = 55,687.78 : x
  2. Step 2: Convert to fraction form
    101,008.18/139,392.26 = 55,687.78/x
  3. Step 3: Cross multiply
    101,008.18x = 139,392.26 × 55,687.78
  4. Step 4: Simplify right side
    101,008.18x = 7,762,445,508.58
  5. Step 5: Solve for x
    x = 7,762,445,508.58/101,008.18
  6. Step 6: Final answer
    x = 76,849.67

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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.