Home / 100,433.91-138,594.13-55,110.76

Finding the Fourth Proportional to 100,433.91, 138,594.13 and 55,110.76

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Solution

The fourth proportional to 100,433.91, 138,594.13 and 55,110.76 is: 76,050.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,433.91 : 138,594.13 = 55,110.76 : x
  2. Step 2: Convert to fraction form
    100,433.91/138,594.13 = 55,110.76/x
  3. Step 3: Cross multiply
    100,433.91x = 138,594.13 × 55,110.76
  4. Step 4: Simplify right side
    100,433.91x = 7,638,027,835.84
  5. Step 5: Solve for x
    x = 7,638,027,835.84/100,433.91
  6. Step 6: Final answer
    x = 76,050.29

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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.