Home / 172,008.09-258,028.43-66,835.17

Finding the Fourth Proportional to 172,008.09, 258,028.43 and 66,835.17

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Solution

The fourth proportional to 172,008.09, 258,028.43 and 66,835.17 is: 100,259.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,008.09 : 258,028.43 = 66,835.17 : x
  2. Step 2: Convert to fraction form
    172,008.09/258,028.43 = 66,835.17/x
  3. Step 3: Cross multiply
    172,008.09x = 258,028.43 × 66,835.17
  4. Step 4: Simplify right side
    172,008.09x = 17,245,373,649.71
  5. Step 5: Solve for x
    x = 17,245,373,649.71/172,008.09
  6. Step 6: Final answer
    x = 100,259.08

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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.