Home / 100,977.40-139,359.18-60,704.20

Finding the Fourth Proportional to 100,977.40, 139,359.18 and 60,704.20

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Solution

The fourth proportional to 100,977.40, 139,359.18 and 60,704.20 is: 83,778.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,977.40 : 139,359.18 = 60,704.20 : x
  2. Step 2: Convert to fraction form
    100,977.40/139,359.18 = 60,704.20/x
  3. Step 3: Cross multiply
    100,977.40x = 139,359.18 × 60,704.20
  4. Step 4: Simplify right side
    100,977.40x = 8,459,687,534.56
  5. Step 5: Solve for x
    x = 8,459,687,534.56/100,977.40
  6. Step 6: Final answer
    x = 83,778.03

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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.