Home / 99,435.62-137,221.74-54,113.96

Finding the Fourth Proportional to 99,435.62, 137,221.74 and 54,113.96

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Solution

The fourth proportional to 99,435.62, 137,221.74 and 54,113.96 is: 74,677.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,435.62 : 137,221.74 = 54,113.96 : x
  2. Step 2: Convert to fraction form
    99,435.62/137,221.74 = 54,113.96/x
  3. Step 3: Cross multiply
    99,435.62x = 137,221.74 × 54,113.96
  4. Step 4: Simplify right side
    99,435.62x = 7,425,611,749.49
  5. Step 5: Solve for x
    x = 7,425,611,749.49/99,435.62
  6. Step 6: Final answer
    x = 74,677.58

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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.