Home / 99,880.58-137,645.70-71,537.06

Finding the Fourth Proportional to 99,880.58, 137,645.70 and 71,537.06

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Solution

The fourth proportional to 99,880.58, 137,645.70 and 71,537.06 is: 98,585.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,880.58 : 137,645.70 = 71,537.06 : x
  2. Step 2: Convert to fraction form
    99,880.58/137,645.70 = 71,537.06/x
  3. Step 3: Cross multiply
    99,880.58x = 137,645.70 × 71,537.06
  4. Step 4: Simplify right side
    99,880.58x = 9,846,768,699.64
  5. Step 5: Solve for x
    x = 9,846,768,699.64/99,880.58
  6. Step 6: Final answer
    x = 98,585.42

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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.