Home / 99,435.12-137,221.05-54,113.46

Finding the Fourth Proportional to 99,435.12, 137,221.05 and 54,113.46

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Solution

The fourth proportional to 99,435.12, 137,221.05 and 54,113.46 is: 74,676.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,435.12 : 137,221.05 = 54,113.46 : x
  2. Step 2: Convert to fraction form
    99,435.12/137,221.05 = 54,113.46/x
  3. Step 3: Cross multiply
    99,435.12x = 137,221.05 × 54,113.46
  4. Step 4: Simplify right side
    99,435.12x = 7,425,505,800.33
  5. Step 5: Solve for x
    x = 7,425,505,800.33/99,435.12
  6. Step 6: Final answer
    x = 74,676.89

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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.