Home / 100,797.18-139,097.55-54,854.87

Finding the Fourth Proportional to 100,797.18, 139,097.55 and 54,854.87

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Solution

The fourth proportional to 100,797.18, 139,097.55 and 54,854.87 is: 75,698.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,797.18 : 139,097.55 = 54,854.87 : x
  2. Step 2: Convert to fraction form
    100,797.18/139,097.55 = 54,854.87/x
  3. Step 3: Cross multiply
    100,797.18x = 139,097.55 × 54,854.87
  4. Step 4: Simplify right side
    100,797.18x = 7,630,177,532.79
  5. Step 5: Solve for x
    x = 7,630,177,532.79/100,797.18
  6. Step 6: Final answer
    x = 75,698.33

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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.