Home / 86,467.69-119,217.99-72,148.51

Finding the Fourth Proportional to 86,467.69, 119,217.99 and 72,148.51

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Solution

The fourth proportional to 86,467.69, 119,217.99 and 72,148.51 is: 99,475.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,467.69 : 119,217.99 = 72,148.51 : x
  2. Step 2: Convert to fraction form
    86,467.69/119,217.99 = 72,148.51/x
  3. Step 3: Cross multiply
    86,467.69x = 119,217.99 × 72,148.51
  4. Step 4: Simplify right side
    86,467.69x = 8,601,400,343.69
  5. Step 5: Solve for x
    x = 8,601,400,343.69/86,467.69
  6. Step 6: Final answer
    x = 99,475.31

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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.