Home / 100,853.68-139,176.93-55,530.72

Finding the Fourth Proportional to 100,853.68, 139,176.93 and 55,530.72

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Solution

The fourth proportional to 100,853.68, 139,176.93 and 55,530.72 is: 76,631.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,853.68 : 139,176.93 = 55,530.72 : x
  2. Step 2: Convert to fraction form
    100,853.68/139,176.93 = 55,530.72/x
  3. Step 3: Cross multiply
    100,853.68x = 139,176.93 × 55,530.72
  4. Step 4: Simplify right side
    100,853.68x = 7,728,594,434.40
  5. Step 5: Solve for x
    x = 7,728,594,434.40/100,853.68
  6. Step 6: Final answer
    x = 76,631.75

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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.