Home / 100,116.76-138,161.18-54,794.72

Finding the Fourth Proportional to 100,116.76, 138,161.18 and 54,794.72

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Solution

The fourth proportional to 100,116.76, 138,161.18 and 54,794.72 is: 75,616.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,116.76 : 138,161.18 = 54,794.72 : x
  2. Step 2: Convert to fraction form
    100,116.76/138,161.18 = 54,794.72/x
  3. Step 3: Cross multiply
    100,116.76x = 138,161.18 × 54,794.72
  4. Step 4: Simplify right side
    100,116.76x = 7,570,502,606.86
  5. Step 5: Solve for x
    x = 7,570,502,606.86/100,116.76
  6. Step 6: Final answer
    x = 75,616.74

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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.