Home / 257,977.80-386,572.20-108,136.40

Finding the Fourth Proportional to 257,977.80, 386,572.20 and 108,136.40

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Solution

The fourth proportional to 257,977.80, 386,572.20 and 108,136.40 is: 162,039.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,977.80 : 386,572.20 = 108,136.40 : x
  2. Step 2: Convert to fraction form
    257,977.80/386,572.20 = 108,136.40/x
  3. Step 3: Cross multiply
    257,977.80x = 386,572.20 × 108,136.40
  4. Step 4: Simplify right side
    257,977.80x = 41,802,526,048.08
  5. Step 5: Solve for x
    x = 41,802,526,048.08/257,977.80
  6. Step 6: Final answer
    x = 162,039.24

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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.