Home / 100,984.28-139,358.86-58,567.96

Finding the Fourth Proportional to 100,984.28, 139,358.86 and 58,567.96

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Solution

The fourth proportional to 100,984.28, 139,358.86 and 58,567.96 is: 80,824.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,984.28 : 139,358.86 = 58,567.96 : x
  2. Step 2: Convert to fraction form
    100,984.28/139,358.86 = 58,567.96/x
  3. Step 3: Cross multiply
    100,984.28x = 139,358.86 × 58,567.96
  4. Step 4: Simplify right side
    100,984.28x = 8,161,964,138.13
  5. Step 5: Solve for x
    x = 8,161,964,138.13/100,984.28
  6. Step 6: Final answer
    x = 80,824.11

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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.