Home / 100,905.11-139,249.03-58,488.24

Finding the Fourth Proportional to 100,905.11, 139,249.03 and 58,488.24

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Solution

The fourth proportional to 100,905.11, 139,249.03 and 58,488.24 is: 80,713.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,905.11 : 139,249.03 = 58,488.24 : x
  2. Step 2: Convert to fraction form
    100,905.11/139,249.03 = 58,488.24/x
  3. Step 3: Cross multiply
    100,905.11x = 139,249.03 × 58,488.24
  4. Step 4: Simplify right side
    100,905.11x = 8,144,430,686.41
  5. Step 5: Solve for x
    x = 8,144,430,686.41/100,905.11
  6. Step 6: Final answer
    x = 80,713.76

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1.5x scale

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.