Home / 172,124.20-257,966.38-138,859.94

Finding the Fourth Proportional to 172,124.20, 257,966.38 and 138,859.94

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Solution

The fourth proportional to 172,124.20, 257,966.38 and 138,859.94 is: 208,112.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,124.20 : 257,966.38 = 138,859.94 : x
  2. Step 2: Convert to fraction form
    172,124.20/257,966.38 = 138,859.94/x
  3. Step 3: Cross multiply
    172,124.20x = 257,966.38 × 138,859.94
  4. Step 4: Simplify right side
    172,124.20x = 35,821,196,048.82
  5. Step 5: Solve for x
    x = 35,821,196,048.82/172,124.20
  6. Step 6: Final answer
    x = 208,112.49

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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.