Home / 515,121.30-772,669.80-141,144.30

Finding the Fourth Proportional to 515,121.30, 772,669.80 and 141,144.30

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Solution

The fourth proportional to 515,121.30, 772,669.80 and 141,144.30 is: 211,713.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,121.30 : 772,669.80 = 141,144.30 : x
  2. Step 2: Convert to fraction form
    515,121.30/772,669.80 = 141,144.30/x
  3. Step 3: Cross multiply
    515,121.30x = 772,669.80 × 141,144.30
  4. Step 4: Simplify right side
    515,121.30x = 109,057,938,052.14
  5. Step 5: Solve for x
    x = 109,057,938,052.14/515,121.30
  6. Step 6: Final answer
    x = 211,713.12

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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.