Home / 99,609.08-137,271.12-71,265.56

Finding the Fourth Proportional to 99,609.08, 137,271.12 and 71,265.56

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Solution

The fourth proportional to 99,609.08, 137,271.12 and 71,265.56 is: 98,210.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,609.08 : 137,271.12 = 71,265.56 : x
  2. Step 2: Convert to fraction form
    99,609.08/137,271.12 = 71,265.56/x
  3. Step 3: Cross multiply
    99,609.08x = 137,271.12 × 71,265.56
  4. Step 4: Simplify right side
    99,609.08x = 9,782,703,238.63
  5. Step 5: Solve for x
    x = 9,782,703,238.63/99,609.08
  6. Step 6: Final answer
    x = 98,210.96

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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.