Home / 100,435.91-138,596.89-55,112.76

Finding the Fourth Proportional to 100,435.91, 138,596.89 and 55,112.76

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Solution

The fourth proportional to 100,435.91, 138,596.89 and 55,112.76 is: 76,053.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,435.91 : 138,596.89 = 55,112.76 : x
  2. Step 2: Convert to fraction form
    100,435.91/138,596.89 = 55,112.76/x
  3. Step 3: Cross multiply
    100,435.91x = 138,596.89 × 55,112.76
  4. Step 4: Simplify right side
    100,435.91x = 7,638,457,135.32
  5. Step 5: Solve for x
    x = 7,638,457,135.32/100,435.91
  6. Step 6: Final answer
    x = 76,053.05

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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.