Home / 86,509.08-129,860.82-67,022.64

Finding the Fourth Proportional to 86,509.08, 129,860.82 and 67,022.64

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Solution

The fourth proportional to 86,509.08, 129,860.82 and 67,022.64 is: 100,609.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,509.08 : 129,860.82 = 67,022.64 : x
  2. Step 2: Convert to fraction form
    86,509.08/129,860.82 = 67,022.64/x
  3. Step 3: Cross multiply
    86,509.08x = 129,860.82 × 67,022.64
  4. Step 4: Simplify right side
    86,509.08x = 8,703,614,988.96
  5. Step 5: Solve for x
    x = 8,703,614,988.96/86,509.08
  6. Step 6: Final answer
    x = 100,609.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.